Question: is levothyroxine likely to cause weight loss or weight gain

Is it safe to take levothyroxine to lose weight? Is it safe to take levothyroxine to lose weight?
Is it safe to take levothyroxine to lose weight?
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Official Answer by Drugs.com 6 Sep 2018
Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Low thyroid function slows down the metabolism and this can lead to weight gain. Taking levothyroxine to treat hypothyroidism can help to normalise metabolism which may lead to weight loss. Levothyroxine contains a boxed warning saying that it should not be used for the treatment of obesity or weight loss. Taking levothyroxine for weight loss when not indicated can cause overdose symptoms. These symptoms include nervousness, insomnia, emotional swings, sweating, hand tremor, hair loss, sensitivity to warm temperatures (feeling hot all the time), muscle weakness, shortness of breath, heart failure and angina, confusion and disorientation. Periods may stop. Stroke, shock, coma and death have been reported as symptoms of overdosage. The best way to lose weight is to cut back calories and increase activity, especially aerobic activity, to burn stored fat. For more information on weight loss visit:

Is it safe to take levothyroxine to lose weight?

Is it safe to take levothyroxine to lose weight?
Is it safe to take levothyroxine to lose weight?
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Has anyone experienced major weight gain after starting Levothyroxine?
Armour Thyroid - How do I find a doc who will prescribe Armour?
Can I take diet supplements/fat burners with Oroxine (levothyroxine)?
Levothyroxine makes me gained weight?
Is it safe to just quit taking Levothyroxine 88 MCG I still have my thyroid?
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*Some of the Side Affects I can encounter
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Official Answer by Drugs.com 6 Sep 2018
Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Low thyroid function slows down the metabolism and this can lead to weight gain. Taking levothyroxine to treat hypothyroidism can help to normalise metabolism which may lead to weight loss. Levothyroxine contains a boxed warning saying that it should not be used for the treatment of obesity or weight loss. Taking levothyroxine for weight loss when not indicated can cause overdose symptoms. These symptoms include nervousness, insomnia, emotional swings, sweating, hand tremor, hair loss, sensitivity to warm temperatures (feeling hot all the time), muscle weakness, shortness of breath, heart failure and angina, confusion and disorientation. Periods may stop. Stroke, shock, coma and death have been reported as symptoms of overdosage. The best way to lose weight is to cut back calories and increase activity, especially aerobic activity, to burn stored fat. For more information on weight loss visit:

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
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 Is Amazon actually giving you the best price? This little known plugin reveals the answer. Managing a healthy weight and lifestyle can make it easier to control a thyroid condition and keep thyroid hormones in the blood within normal levels. Appetite swings are both a cause and effect of levothyroxine and weight loss. Some argue that a decreased appetite may cause the weight loss, whereas other evidence supports theories that the weight loss caused by this synthetic hormone in turn causes a counteracting increase in appetite as the body attempts to sustain sufficient weight. Although both increased and decreased appetite are reported with the use of this drug, levothyroxine and weight loss are more strongly correlated than levothyroxine and weight gain. Levothyroxine is available only by prescription due to the possibility of several severe side effects. Those experiencing any of the symptoms associated with hypothyroidism should consult with a medical professional to discuss this potential disorder. Hypothyroidism can dramatically affect a person's mental and physical health, often decreasing quality of life and impairing lifestyles. A physician or health care provider may run a variety of tests, including hormonal measurements to better determine if a person is suffering from a thyroid disorder.

Is There a Connection between Levothyroxine and Weight Loss?

Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
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Is Amazon actually giving you the best price? This little known plugin reveals the answer. Managing a healthy weight and lifestyle can make it easier to control a thyroid condition and keep thyroid hormones in the blood within normal levels. Appetite swings are both a cause and effect of levothyroxine and weight loss. Some argue that a decreased appetite may cause the weight loss, whereas other evidence supports theories that the weight loss caused by this synthetic hormone in turn causes a counteracting increase in appetite as the body attempts to sustain sufficient weight. Although both increased and decreased appetite are reported with the use of this drug, levothyroxine and weight loss are more strongly correlated than levothyroxine and weight gain. Levothyroxine is available only by prescription due to the possibility of several severe side effects. Those experiencing any of the symptoms associated with hypothyroidism should consult with a medical professional to discuss this potential disorder. Hypothyroidism can dramatically affect a person's mental and physical health, often decreasing quality of life and impairing lifestyles. A physician or health care provider may run a variety of tests, including hormonal measurements to better determine if a person is suffering from a thyroid disorder.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 When synthroid is taken, basal metabolic rate is corrected (or normalized) and weight loss occurs without much effort. This may result in weight loss without any change in lifestyle, dietary intake, etc. When you’re burning more energy at rest as a result of an increase in basal metabolic rate (compared to pre-synthroid treatment), weight loss is likely to occur. Neurochemistry: There is evidence to suggest that synthroid (levothyroxine) affects neurotransmission and neural activation (of particular regions). For this reason, it should be hypothesized that altered concentrations of neurotransmitters (e.g. monoamines) and/or changes in neural activation following synthroid administration – may contribute (directly or indirectly) to weight loss. It is understood that neurochemical changes can affect propensity to lose weight. Placebo effect: It may be necessary to consider that in a subset of synthroid users, the placebo effect contributes to weight loss. Some individuals may expect to lose weight while taking synthroid, and the weight loss becomes a self-fulfilling prophesy.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily

Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?

When synthroid is taken, basal metabolic rate is corrected (or normalized) and weight loss occurs without much effort. This may result in weight loss without any change in lifestyle, dietary intake, etc. When you’re burning more energy at rest as a result of an increase in basal metabolic rate (compared to pre-synthroid treatment), weight loss is likely to occur. Neurochemistry: There is evidence to suggest that synthroid (levothyroxine) affects neurotransmission and neural activation (of particular regions). For this reason, it should be hypothesized that altered concentrations of neurotransmitters (e.g. monoamines) and/or changes in neural activation following synthroid administration – may contribute (directly or indirectly) to weight loss. It is understood that neurochemical changes can affect propensity to lose weight. Placebo effect: It may be necessary to consider that in a subset of synthroid users, the placebo effect contributes to weight loss. Some individuals may expect to lose weight while taking synthroid, and the weight loss becomes a self-fulfilling prophesy.

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
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 Levothyroxine and weight loss are indeed correlated in that a common adverse effect of this drug is loss of appetite and weight. This medication is a synthetic of the hormone it strives to mimic — thyroxine. It is primarily used in the treatment of numerous thyroid conditions. Of all conditions related to the thyroid, hypothyroidism is the most common ailment in which levothyroxine is prescribed. The prefix hypo generally means under or less, which translates hypothyroidism into not enough thyroid action. Specifically, this condition describes the inability of the thyroid to produce enough thyroid hormones. Levothyroxine, by simulating thyroxine, acts to fill the void of insufficient production. Side effects of levothyroxine may include insomnia. The effects of hypothyroidism are broad and varied, ranging from insignificant to life threatening depending on the severity of diagnosis. Among the symptoms are fatigue, depression, and weight gain.

Levothyroxine and weight loss are indeed correlated in that a common adverse effect of this drug is loss of appetite and weight. This medication is a synthetic of the hormone it strives to mimic — thyroxine. It is primarily used in the treatment of numerous thyroid conditions. Of all conditions related to the thyroid, hypothyroidism is the most common ailment in which levothyroxine is prescribed. The prefix hypo generally means under or less, which translates hypothyroidism into not enough thyroid action. Specifically, this condition describes the inability of the thyroid to produce enough thyroid hormones. Levothyroxine, by simulating thyroxine, acts to fill the void of insufficient production. Side effects of levothyroxine may include insomnia. The effects of hypothyroidism are broad and varied, ranging from insignificant to life threatening depending on the severity of diagnosis. Among the symptoms are fatigue, depression, and weight gain.

Levothyroxine - weight gain? Levothyroxine - weight gain?
Levothyroxine - weight gain?
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Rajive Goel 9 Jan 2012
Rather strangle that Levothyroxine has reported as one its side effects an increased appetite, along with weight loss, weight gain was not reprted. However, if you do think it could be one of its rare side effects, do please ask your doc to change your med. Please do take care, best wishes! Votes: +1
JO
Jovanna 9 Jan 2012
I am 63 and on 88mcg of Levothyroxine. I am finding it hard to lose weight too, despite exercising and diet. I lost 20 lbs on WW in 2009 b/4 being on the pills, and put on weight only after I started taking thyroid pills. You'd think I would have LOST, not gained, weight. In the past 4 mos. or so I didn't step on the scale until New Year's Day.

Levothyroxine - weight gain?

Levothyroxine - weight gain?
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Rajive Goel 9 Jan 2012
Rather strangle that Levothyroxine has reported as one its side effects an increased appetite, along with weight loss, weight gain was not reprted. However, if you do think it could be one of its rare side effects, do please ask your doc to change your med. Please do take care, best wishes! Votes: +1
JO
Jovanna 9 Jan 2012
I am 63 and on 88mcg of Levothyroxine. I am finding it hard to lose weight too, despite exercising and diet. I lost 20 lbs on WW in 2009 b/4 being on the pills, and put on weight only after I started taking thyroid pills. You'd think I would have LOST, not gained, weight. In the past 4 mos. or so I didn't step on the scale until New Year's Day.

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
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 Also often present in later stages are slowed speech, goiters, and abnormal menstrual cycles in females. Levothyroxine and weight loss are directly related, meaning that, the higher the dose prescribed or administered, the more significant the weight loss effects. Weight loss is only one of the multitude of possible adverse effects surrounding levothyroxine use. Other such effects include abdominal pain, palpitations, and insomnia. Also common are agitation and mood swings, nausea, and appetite swings. Is Amazon actually giving you the best price? This little known plugin reveals the answer. Managing a healthy weight and lifestyle can make it easier to control a thyroid condition and keep thyroid hormones in the blood within normal levels. Appetite swings are both a cause and effect of levothyroxine and weight loss. Some argue that a decreased appetite may cause the weight loss, whereas other evidence supports theories that the weight loss caused by this synthetic hormone in turn causes a counteracting increase in appetite as the body attempts to sustain sufficient weight.

Also often present in later stages are slowed speech, goiters, and abnormal menstrual cycles in females. Levothyroxine and weight loss are directly related, meaning that, the higher the dose prescribed or administered, the more significant the weight loss effects. Weight loss is only one of the multitude of possible adverse effects surrounding levothyroxine use. Other such effects include abdominal pain, palpitations, and insomnia. Also common are agitation and mood swings, nausea, and appetite swings. Is Amazon actually giving you the best price? This little known plugin reveals the answer. Managing a healthy weight and lifestyle can make it easier to control a thyroid condition and keep thyroid hormones in the blood within normal levels. Appetite swings are both a cause and effect of levothyroxine and weight loss. Some argue that a decreased appetite may cause the weight loss, whereas other evidence supports theories that the weight loss caused by this synthetic hormone in turn causes a counteracting increase in appetite as the body attempts to sustain sufficient weight.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 One person with a specific gut microbiome may differ significantly in terms of weight loss/gain from a particular food – than a person with a different gut microbiome. It may be necessary to consider that administration of synthroid may alter a person’s gut microbe in such a way as to promote weight loss. Metabolism increase: The primary reason synthroid users experience weight loss is related to an increase in basal metabolic rate (BMR). As was already discussed, individuals with hypothyroidism tend to exhibit abnormally slow basal metabolic rates. When synthroid is taken, basal metabolic rate is corrected (or normalized) and weight loss occurs without much effort. This may result in weight loss without any change in lifestyle, dietary intake, etc. When you’re burning more energy at rest as a result of an increase in basal metabolic rate (compared to pre-synthroid treatment), weight loss is likely to occur. Neurochemistry: There is evidence to suggest that synthroid (levothyroxine) affects neurotransmission and neural activation (of particular regions).

One person with a specific gut microbiome may differ significantly in terms of weight loss/gain from a particular food – than a person with a different gut microbiome. It may be necessary to consider that administration of synthroid may alter a person’s gut microbe in such a way as to promote weight loss. Metabolism increase: The primary reason synthroid users experience weight loss is related to an increase in basal metabolic rate (BMR). As was already discussed, individuals with hypothyroidism tend to exhibit abnormally slow basal metabolic rates. When synthroid is taken, basal metabolic rate is corrected (or normalized) and weight loss occurs without much effort. This may result in weight loss without any change in lifestyle, dietary intake, etc. When you’re burning more energy at rest as a result of an increase in basal metabolic rate (compared to pre-synthroid treatment), weight loss is likely to occur. Neurochemistry: There is evidence to suggest that synthroid (levothyroxine) affects neurotransmission and neural activation (of particular regions).

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 When taking synthroid, your energy level may skyrocket (compared to what it was) and you may end up going to the gym, moving around more, etc. – all of which can burn calories, enhance your metabolism, and contribute to weight loss. Ghrelin reduction: A hormone responsible for regulating hunger, known as “ghrelin,” is abnormally high among individuals with hypothyroidism. Ongoing administration of levothyroxine (synthroid) appears to significantly reduce ghrelin concentrations. It is possible that the reduction of ghrelin as a result of synthroid administration leads users to feel more satiated with fewer food cravings than usual. ( Source: http://www.ncbi.nlm.nih.gov/pubmed/23339003)
Gut bacteria: There is some evidence to suggest that some cases of hypothyroidism may be caused by small-intestine bacterial overgrowth (SIBO) within the gut. It is known that a person’s gut bacteria can be predictive of whether they’re likely to lose or gain weight from eating a certain set of foods.

When taking synthroid, your energy level may skyrocket (compared to what it was) and you may end up going to the gym, moving around more, etc. – all of which can burn calories, enhance your metabolism, and contribute to weight loss. Ghrelin reduction: A hormone responsible for regulating hunger, known as “ghrelin,” is abnormally high among individuals with hypothyroidism. Ongoing administration of levothyroxine (synthroid) appears to significantly reduce ghrelin concentrations. It is possible that the reduction of ghrelin as a result of synthroid administration leads users to feel more satiated with fewer food cravings than usual. ( Source: http://www.ncbi.nlm.nih.gov/pubmed/23339003)
Gut bacteria: There is some evidence to suggest that some cases of hypothyroidism may be caused by small-intestine bacterial overgrowth (SIBO) within the gut. It is known that a person’s gut bacteria can be predictive of whether they’re likely to lose or gain weight from eating a certain set of foods.

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
Is Amazon actually giving you the best price? This little known plugin reveals the answer.
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 Specifically, this condition describes the inability of the thyroid to produce enough thyroid hormones. Levothyroxine, by simulating thyroxine, acts to fill the void of insufficient production. Side effects of levothyroxine may include insomnia. The effects of hypothyroidism are broad and varied, ranging from insignificant to life threatening depending on the severity of diagnosis. Among the symptoms are fatigue, depression, and weight gain. Also often present in later stages are slowed speech, goiters, and abnormal menstrual cycles in females. Levothyroxine and weight loss are directly related, meaning that, the higher the dose prescribed or administered, the more significant the weight loss effects. Weight loss is only one of the multitude of possible adverse effects surrounding levothyroxine use. Other such effects include abdominal pain, palpitations, and insomnia. Also common are agitation and mood swings, nausea, and appetite swings.

Specifically, this condition describes the inability of the thyroid to produce enough thyroid hormones. Levothyroxine, by simulating thyroxine, acts to fill the void of insufficient production. Side effects of levothyroxine may include insomnia. The effects of hypothyroidism are broad and varied, ranging from insignificant to life threatening depending on the severity of diagnosis. Among the symptoms are fatigue, depression, and weight gain. Also often present in later stages are slowed speech, goiters, and abnormal menstrual cycles in females. Levothyroxine and weight loss are directly related, meaning that, the higher the dose prescribed or administered, the more significant the weight loss effects. Weight loss is only one of the multitude of possible adverse effects surrounding levothyroxine use. Other such effects include abdominal pain, palpitations, and insomnia. Also common are agitation and mood swings, nausea, and appetite swings.

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
Is Amazon actually giving you the best price? This little known plugin reveals the answer.
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 Although both increased and decreased appetite are reported with the use of this drug, levothyroxine and weight loss are more strongly correlated than levothyroxine and weight gain. Levothyroxine is available only by prescription due to the possibility of several severe side effects. Those experiencing any of the symptoms associated with hypothyroidism should consult with a medical professional to discuss this potential disorder. Hypothyroidism can dramatically affect a person's mental and physical health, often decreasing quality of life and impairing lifestyles. A physician or health care provider may run a variety of tests, including hormonal measurements to better determine if a person is suffering from a thyroid disorder. Once a diagnosis is confirmed, the doctor can help the patient carefully weigh treatment options including levothyroxine. Once a diagnosis is confirmed, treatment options may be weighed out and implemented. Before agreeing to any particular method of treatment, it is necessary to consider both benefits and risks of the proposed treatment. If one is willing to risk the potential for adverse effects in treating a thyroid disorder, then perhaps a prescription drug such as levothyroxine is a valid option. 📦Amazon Doesn't Want You to Know About This Plugin
Learn about a little known plugin that tells you if you're getting the best price on Amazon.

Although both increased and decreased appetite are reported with the use of this drug, levothyroxine and weight loss are more strongly correlated than levothyroxine and weight gain. Levothyroxine is available only by prescription due to the possibility of several severe side effects. Those experiencing any of the symptoms associated with hypothyroidism should consult with a medical professional to discuss this potential disorder. Hypothyroidism can dramatically affect a person's mental and physical health, often decreasing quality of life and impairing lifestyles. A physician or health care provider may run a variety of tests, including hormonal measurements to better determine if a person is suffering from a thyroid disorder. Once a diagnosis is confirmed, the doctor can help the patient carefully weigh treatment options including levothyroxine. Once a diagnosis is confirmed, treatment options may be weighed out and implemented. Before agreeing to any particular method of treatment, it is necessary to consider both benefits and risks of the proposed treatment. If one is willing to risk the potential for adverse effects in treating a thyroid disorder, then perhaps a prescription drug such as levothyroxine is a valid option. 📦Amazon Doesn't Want You to Know About This Plugin
Learn about a little known plugin that tells you if you're getting the best price on Amazon.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 The amount of weight loss that occurs from synthroid, as well as how quickly it occurs, will likely be contingent upon how long you lived with untreated hypothyroidism and the severity of your hypothyroidism. How Synthroid (Levothyroxine) May Cause Weight Loss
There are many possible ways in which synthroid may contribute to weight loss. In most cases, weight loss resulting from synthroid usage should be chalked up to the fact that it corrects an abnormal and/or dysfunctional basal metabolic rate (BMR) associated with hypothyroidism. It is the correction of BMR (by promoting an increase) that leads to weight loss. Other ways in which synthroid may cause weight loss include: appetite reduction, cognitive enhancement, increased energy, altered neurotransmission, and side effects (e.g. diarrhea). Appetite reduction: Many synthroid users report that the drug decreases and/or suppresses their appetite. Assuming you feel less hungry than usual while taking synthroid, there’s a good chance that you’ll probably eat less food and end up losing some weight. In a subset of individuals diagnosed with hypothyroidism, an overwhelming appetite is problematic and leads to constant overeating.

The amount of weight loss that occurs from synthroid, as well as how quickly it occurs, will likely be contingent upon how long you lived with untreated hypothyroidism and the severity of your hypothyroidism. How Synthroid (Levothyroxine) May Cause Weight Loss
There are many possible ways in which synthroid may contribute to weight loss. In most cases, weight loss resulting from synthroid usage should be chalked up to the fact that it corrects an abnormal and/or dysfunctional basal metabolic rate (BMR) associated with hypothyroidism. It is the correction of BMR (by promoting an increase) that leads to weight loss. Other ways in which synthroid may cause weight loss include: appetite reduction, cognitive enhancement, increased energy, altered neurotransmission, and side effects (e.g. diarrhea). Appetite reduction: Many synthroid users report that the drug decreases and/or suppresses their appetite. Assuming you feel less hungry than usual while taking synthroid, there’s a good chance that you’ll probably eat less food and end up losing some weight. In a subset of individuals diagnosed with hypothyroidism, an overwhelming appetite is problematic and leads to constant overeating.

Levothyroxine and weight GAIN? — MyFitnessPal.com Levothyroxine and weight GAIN?
Levothyroxine and weight GAIN?
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 I have tried to do research this, but there isn't a lot. Most places say that Levo should, if anything, cause weight loss. However, I have come across some people who have a similar experience - no life/diet changes, added levo, and sudden weight gain. July 12, 2013 2:17PM
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beemour
Member Posts: 2 Member
Posts: 2
I also take levothyroxine (150mg/day). I have learned that it is critical to take it at the same time every day, with respect to meals, because empty v. full stomach affects how it is absorbed. This can throw off your levels. I have read in many, many books and articles that it is just plain harder to lose weight at all when you have a thyroid problem (Thyroid Sourcebook is a good resource). If you have access to a nutritionist or dietitian, maybe through your endo, I have found that they're very helpful.

Levothyroxine and weight GAIN? — MyFitnessPal.com

Levothyroxine and weight GAIN?
Levothyroxine and weight GAIN?
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I have tried to do research this, but there isn't a lot. Most places say that Levo should, if anything, cause weight loss. However, I have come across some people who have a similar experience - no life/diet changes, added levo, and sudden weight gain. July 12, 2013 2:17PM
0
beemour
Member Posts: 2 Member
Posts: 2
I also take levothyroxine (150mg/day). I have learned that it is critical to take it at the same time every day, with respect to meals, because empty v. full stomach affects how it is absorbed. This can throw off your levels. I have read in many, many books and articles that it is just plain harder to lose weight at all when you have a thyroid problem (Thyroid Sourcebook is a good resource). If you have access to a nutritionist or dietitian, maybe through your endo, I have found that they're very helpful.

Can Levothyroxine cause Weight Loss? Does Levothyroxine cause Weight Loss?
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Can Levothyroxine cause Weight Loss?

Does Levothyroxine cause Weight Loss?
Does Levothyroxine cause Weight Loss?
Weight Loss is a known side effect of Levothyroxine
About Levothyroxine
Discussions around the web

Can Levothyroxine cause Weight Loss? Experiences Side Effects & Concerns Compare Medications Drug Facts
Does Levothyroxine cause Weight Loss? Last Update September 23, 2018
Weight Loss is a known side effect of Levothyroxine
Disclaimer
#2 in Levothyroxine discussions - 3,458 posts discuss Weight Loss with Levothyroxine. Weight Loss is #2 concern in Levothyroxine discussions. Weight Loss 3,458
Happened to me too Report to FDA
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Is it safe to take levothyroxine to lose weight? Is it safe to take levothyroxine to lose weight?
Is it safe to take levothyroxine to lose weight?
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 Is it safe to take levothyroxine to lose weight? Q & A
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Is it safe to take...
Is it safe to take levothyroxine to lose weight? Asked
27 Nov 2012 by nickki 116
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24 June 2019
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thyroid disease, levothyroxine, weight, thyroid
I am taking levothyroxine to lose weight and I do not have a thyroid problem. What are some of the risk or problems I could encounter using this drug to lose weight? Added 27 Nov 2012: *Some of the Side Affects I can encounter
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Official Answer by Drugs.com 6 Sep 2018
Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Low thyroid function slows down the metabolism and this can lead to weight gain. Taking levothyroxine to treat hypothyroidism can help to normalise metabolism which may lead to weight loss. Levothyroxine contains a boxed warning saying that it should not be used for the treatment of obesity or weight loss. Taking levothyroxine for weight loss when not indicated can cause overdose symptoms.

Is it safe to take levothyroxine to lose weight? Q & A
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Is it safe to take...
Is it safe to take levothyroxine to lose weight? Asked
27 Nov 2012 by nickki 116
Updated
24 June 2019
Topics
thyroid disease, levothyroxine, weight, thyroid
I am taking levothyroxine to lose weight and I do not have a thyroid problem. What are some of the risk or problems I could encounter using this drug to lose weight? Added 27 Nov 2012: *Some of the Side Affects I can encounter
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Official Answer by Drugs.com 6 Sep 2018
Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Low thyroid function slows down the metabolism and this can lead to weight gain. Taking levothyroxine to treat hypothyroidism can help to normalise metabolism which may lead to weight loss. Levothyroxine contains a boxed warning saying that it should not be used for the treatment of obesity or weight loss. Taking levothyroxine for weight loss when not indicated can cause overdose symptoms.

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 Synthetic reaction: The fact that synthroid is a synthetic, rather than bioidentical hormone is problematic for many users. The chemical structure of synthroid differs from endogenously produced thyroxine (T4), and as a result, it may provoke abnormal and unpredictable neurophysiological reactions in users. Weight gain may be one of many possible implications associated with using a synthetically-manufactured hormone, as opposed to one that is endogenously secreted (or even bioidentical). Variables that may influence weight gain from Synthroid (Levothyroxine)
Whenever contemplating the weight you’ve gained from synthroid, it may be helpful to consider influential variables. Examples of such variables to consider that may affect weight gain include: synthroid dosage, duration of administration, other medications or drugs, and your lifestyle. Some users may find that they were gaining weight from an improper synthroid dosage, while others may realize that weight gain could be caused by other pharmaceutical medications. Synthroid dosage
The dosage of synthroid that you’re taking may affect whether you’re likely to gain weight. Individuals taking extremely high dosages are more likely to lose weight than gain weight.

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?

Synthetic reaction: The fact that synthroid is a synthetic, rather than bioidentical hormone is problematic for many users. The chemical structure of synthroid differs from endogenously produced thyroxine (T4), and as a result, it may provoke abnormal and unpredictable neurophysiological reactions in users. Weight gain may be one of many possible implications associated with using a synthetically-manufactured hormone, as opposed to one that is endogenously secreted (or even bioidentical). Variables that may influence weight gain from Synthroid (Levothyroxine)
Whenever contemplating the weight you’ve gained from synthroid, it may be helpful to consider influential variables. Examples of such variables to consider that may affect weight gain include: synthroid dosage, duration of administration, other medications or drugs, and your lifestyle. Some users may find that they were gaining weight from an improper synthroid dosage, while others may realize that weight gain could be caused by other pharmaceutical medications. Synthroid dosage
The dosage of synthroid that you’re taking may affect whether you’re likely to gain weight. Individuals taking extremely high dosages are more likely to lose weight than gain weight.

Has anyone experienced major weight gain after starting Levothyroxine? Has anyone experienced major weight gain after starting Levothyroxine?
Has anyone experienced major weight gain after starting Levothyroxine?
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My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
Levothyroxine.Does this cause weight gain?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
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 See https://www.drugs.com/sfx/levothyroxine-side-effects.html
You may find some of these comments from users of levothyroxine interesting. https://www.drugs.com/comments/levothyroxine/
Votes: +0
JA
jaroslaw666 24 Jul 2011
Suzanne's first comment is right on. Weight gain is not a normal side effect of taking levo and too much of it could cause weight loss, the opposite of what you report. Your doc should get involved. You're more likely than not still HYPOthyroid and may need more levo. Read comments on the second website with extreme caution and recall these are coming from laymen. Some I read are frankly off the wall yet are rated 'helpful' by other uninformed lay persons. I'd rate this site as potentially dangerous and unhelpful unless you have sufficient medical knowledge to allow you to discriminate between useful info and utter nonsense. PT
pttwllr 9 Feb 2015
I've been taking Levothroxine for over a year and taking 100 MG and still gaining weight I watch everything.

Has anyone experienced major weight gain after starting Levothyroxine?

Has anyone experienced major weight gain after starting Levothyroxine?
Has anyone experienced major weight gain after starting Levothyroxine?
Asked
Updated
Topics
Answer this question
Answers (43)
Answer this question Find similar questions
Further Information
Similar Questions
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
Levothyroxine.Does this cause weight gain?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions

See https://www.drugs.com/sfx/levothyroxine-side-effects.html
You may find some of these comments from users of levothyroxine interesting. https://www.drugs.com/comments/levothyroxine/
Votes: +0
JA
jaroslaw666 24 Jul 2011
Suzanne's first comment is right on. Weight gain is not a normal side effect of taking levo and too much of it could cause weight loss, the opposite of what you report. Your doc should get involved. You're more likely than not still HYPOthyroid and may need more levo. Read comments on the second website with extreme caution and recall these are coming from laymen. Some I read are frankly off the wall yet are rated 'helpful' by other uninformed lay persons. I'd rate this site as potentially dangerous and unhelpful unless you have sufficient medical knowledge to allow you to discriminate between useful info and utter nonsense. PT
pttwllr 9 Feb 2015
I've been taking Levothroxine for over a year and taking 100 MG and still gaining weight I watch everything.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 Among individuals diagnosed with hypothyroidism, the body is unable to produce adequate T4 (thyroxine) via the thyroid gland, which has deleterious effects upon DNA transcription, protein synthesis, and a multitude of neurophysiological processes. As a result, individuals with hypothyroidism often exhibit symptoms such as: cognitive deficits, depression, dry skin, fatigue, malaise, and weight gain. Regular administration of synthroid (levothyroxine) is thought to reverse the aforementioned symptoms of hypothyroidism and improve functionality of the user. After several months of properly-dosed synthroid, users often report: clearer thinking, increased energy, mood improvements, and perhaps most noticeably – weight loss. Weight loss is often among the most discussed synthroid side effects due to the fact that nearly everyone wants to look good and maintain a healthy physique. Additionally, many individuals had gained a significant amount of weight prior to using synthroid (as a result of hypothyroidism), a condition which slows metabolism. When metabolic processes are corrected as a result of synthroid, users end up losing weight and the weight loss comes as a pleasant surprise. Synthroid (Levothyroxine) and Weight Loss:

Among individuals diagnosed with hypothyroidism, the body is unable to produce adequate T4 (thyroxine) via the thyroid gland, which has deleterious effects upon DNA transcription, protein synthesis, and a multitude of neurophysiological processes. As a result, individuals with hypothyroidism often exhibit symptoms such as: cognitive deficits, depression, dry skin, fatigue, malaise, and weight gain. Regular administration of synthroid (levothyroxine) is thought to reverse the aforementioned symptoms of hypothyroidism and improve functionality of the user. After several months of properly-dosed synthroid, users often report: clearer thinking, increased energy, mood improvements, and perhaps most noticeably – weight loss. Weight loss is often among the most discussed synthroid side effects due to the fact that nearly everyone wants to look good and maintain a healthy physique. Additionally, many individuals had gained a significant amount of weight prior to using synthroid (as a result of hypothyroidism), a condition which slows metabolism. When metabolic processes are corrected as a result of synthroid, users end up losing weight and the weight loss comes as a pleasant surprise. Synthroid (Levothyroxine) and Weight Loss:

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 High dosages of synthroid are thought to increase basal metabolic rate (BMR) and the number of calories burned at rest. On the other hand, those taking low dosages of synthroid may end up gaining weight as a result of inadequately treated hypothyroidism. At extremely low dosages, you may not attain enough synthroid to counteract the metabolic slowing that occurs with hypothyroidism. It may take your doctor awhile to find the optimal dosage to get your TSH levels within a normative range. Synthroid dosing is known to have an NTI (narrow therapeutic index). In some cases, even high-dose users may end up gaining some weight – assuming their neurophysiology reacts unusually to the synthroid. A properly calibrated dosage by a medical professional (e.g. endocrinologist) should help reduce likelihood of weight gain (or loss) while taking synthroid. Duration of administration
The duration over which you’ve taken synthroid (levothyroxine) may affect how likely you are to gain weight. It is possible that some users may gain weight over a short-term (e.g. less than 3 months of treatment), while others may notice some weight gain over a

High dosages of synthroid are thought to increase basal metabolic rate (BMR) and the number of calories burned at rest. On the other hand, those taking low dosages of synthroid may end up gaining weight as a result of inadequately treated hypothyroidism. At extremely low dosages, you may not attain enough synthroid to counteract the metabolic slowing that occurs with hypothyroidism. It may take your doctor awhile to find the optimal dosage to get your TSH levels within a normative range. Synthroid dosing is known to have an NTI (narrow therapeutic index). In some cases, even high-dose users may end up gaining some weight – assuming their neurophysiology reacts unusually to the synthroid. A properly calibrated dosage by a medical professional (e.g. endocrinologist) should help reduce likelihood of weight gain (or loss) while taking synthroid. Duration of administration
The duration over which you’ve taken synthroid (levothyroxine) may affect how likely you are to gain weight. It is possible that some users may gain weight over a short-term (e.g. less than 3 months of treatment), while others may notice some weight gain over a

Weight Loss With Levothyroxine Medication | Livestrong.com Weight Loss With Levothyroxine Medication
Weight Loss With Levothyroxine Medication
Metabolism and Weight Loss
Dietary Guidelines -- Carbohydrates
Calories, Weight Loss and Metabolism
Levothyroxine Interactions and Iodine
references
 Part of your endocrine system, your thyroid gland is located at the base of your throat and creates the hormones that control how quickly you use both oxygen and energy -- the basis of your metabolism. A sluggish thyroid doesn't produce enough hormones; as a result your metabolism slows down -- which can easily lead to weight gain. Once you begin to take levothyroxine, your metabolism will normalize and weight loss should be easier. Metabolism and Weight Loss
Weight loss with hypothyroidism can be challenging because a slower metabolism results in fewer calories being used. Taking levothyroxine should boost your metabolism, helping you to burn more calories, even at rest. You can also keep your metabolism high by burning more calories through exercise -- especially strength training exercises, which build muscle mass. The American College of Sports Medicine notes that increasing your ratio of muscle to fat will enable you to burn more calories, even at rest. Consume at least 18 percent to 20 percent of your calories from lean protein, suggests the ACSM. Advertisement
Dietary Guidelines -- Carbohydrates
There is no single diet for weight-loss with hypothyroidism, explains the Mayo Clinic.

Weight Loss With Levothyroxine Medication | Livestrong.com

Weight Loss With Levothyroxine Medication
Weight Loss With Levothyroxine Medication
Metabolism and Weight Loss
Dietary Guidelines -- Carbohydrates
Calories, Weight Loss and Metabolism
Levothyroxine Interactions and Iodine
references

Part of your endocrine system, your thyroid gland is located at the base of your throat and creates the hormones that control how quickly you use both oxygen and energy -- the basis of your metabolism. A sluggish thyroid doesn't produce enough hormones; as a result your metabolism slows down -- which can easily lead to weight gain. Once you begin to take levothyroxine, your metabolism will normalize and weight loss should be easier. Metabolism and Weight Loss
Weight loss with hypothyroidism can be challenging because a slower metabolism results in fewer calories being used. Taking levothyroxine should boost your metabolism, helping you to burn more calories, even at rest. You can also keep your metabolism high by burning more calories through exercise -- especially strength training exercises, which build muscle mass. The American College of Sports Medicine notes that increasing your ratio of muscle to fat will enable you to burn more calories, even at rest. Consume at least 18 percent to 20 percent of your calories from lean protein, suggests the ACSM. Advertisement
Dietary Guidelines -- Carbohydrates
There is no single diet for weight-loss with hypothyroidism, explains the Mayo Clinic.

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
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Synthroid (Levothyroxine) is a medication commonly prescribed for the treatment of hypothyroidism, and is also a popular intervention for goiters, nodular thyroid disease, and thyroid cancer. Administration of synthroid reverses neurophysiological irregularities associated with insufficient thyroxine (T4) and reduces concentrations of TSH (thyroid-stimulating hormone). Within several months of synthroid administration, many individuals report improvements in mood, energy, and overall well-being. Although synthroid is a synthetically-engineered form of thyroxine called “levothyroxine,” and isn’t bioidentical to endogenously secreted thyroxine (via properly functioning thyroid glands), it is similar enough to improve hypothyroidism biomarkers and symptoms. Assuming the dosage of synthroid is properly calibrated for the specific user, severe side effects and/or adverse reactions are unlikely. Most people are able to tolerate synthroid over a long-term (many years) without complaints of unwanted side effects. Despite the favorable tolerability of synthroid for most users, a subset of users report significant unwanted synthroid side effects, one of which is often weight gain. It is unclear as to how synthroid may cause weight gain as most literature suggests that it is “weight neutral” or unlikely to affect body weight.

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
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Synthroid (Levothyroxine) is a medication commonly prescribed for the treatment of hypothyroidism, and is also a popular intervention for goiters, nodular thyroid disease, and thyroid cancer. Administration of synthroid reverses neurophysiological irregularities associated with insufficient thyroxine (T4) and reduces concentrations of TSH (thyroid-stimulating hormone). Within several months of synthroid administration, many individuals report improvements in mood, energy, and overall well-being. Although synthroid is a synthetically-engineered form of thyroxine called “levothyroxine,” and isn’t bioidentical to endogenously secreted thyroxine (via properly functioning thyroid glands), it is similar enough to improve hypothyroidism biomarkers and symptoms. Assuming the dosage of synthroid is properly calibrated for the specific user, severe side effects and/or adverse reactions are unlikely. Most people are able to tolerate synthroid over a long-term (many years) without complaints of unwanted side effects. Despite the favorable tolerability of synthroid for most users, a subset of users report significant unwanted synthroid side effects, one of which is often weight gain. It is unclear as to how synthroid may cause weight gain as most literature suggests that it is “weight neutral” or unlikely to affect body weight.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 During treatment with synthroid, the body receives a synthetic version of thyroxine (T4) which upregulates the hypothyroid-induced metabolic downregulation and facilitates weight loss. Users that are prescribed an optimal dosage of synthroid should lose all weight that was gained specifically as a result of their hypothyroidism. Weight loss from synthroid is usually most prominent during early stages of synthroid treatment because the body hasn’t yet adapted to the increase in basal metabolic rate (BMR). Other content on MentalHealthDaily.com
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As synthroid treatment is continued for an extended duration, the body will have adjusted to the increase in basal metabolic rate (BMR), and additional weight loss will subside. For some users, weight loss may subside after a few months of treatment, yet for others it may take a year for the weight loss to diminish. The amount of weight loss that occurs from synthroid, as well as how quickly it occurs, will likely be contingent upon how long you lived with untreated hypothyroidism and the severity of your hypothyroidism. How Synthroid (Levothyroxine) May Cause Weight Loss
There are many possible ways in which synthroid may contribute to weight loss. In most cases, weight loss resulting from synthroid usage should be chalked up to the fact that it corrects an abnormal and/or dysfunctional basal metabolic rate (BMR) associated with hypothyroidism. It is the correction of BMR (by promoting an increase) that leads to weight loss. Other ways in which synthroid may cause weight loss include:

During treatment with synthroid, the body receives a synthetic version of thyroxine (T4) which upregulates the hypothyroid-induced metabolic downregulation and facilitates weight loss. Users that are prescribed an optimal dosage of synthroid should lose all weight that was gained specifically as a result of their hypothyroidism. Weight loss from synthroid is usually most prominent during early stages of synthroid treatment because the body hasn’t yet adapted to the increase in basal metabolic rate (BMR). Other content on MentalHealthDaily.com
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As synthroid treatment is continued for an extended duration, the body will have adjusted to the increase in basal metabolic rate (BMR), and additional weight loss will subside. For some users, weight loss may subside after a few months of treatment, yet for others it may take a year for the weight loss to diminish. The amount of weight loss that occurs from synthroid, as well as how quickly it occurs, will likely be contingent upon how long you lived with untreated hypothyroidism and the severity of your hypothyroidism. How Synthroid (Levothyroxine) May Cause Weight Loss
There are many possible ways in which synthroid may contribute to weight loss. In most cases, weight loss resulting from synthroid usage should be chalked up to the fact that it corrects an abnormal and/or dysfunctional basal metabolic rate (BMR) associated with hypothyroidism. It is the correction of BMR (by promoting an increase) that leads to weight loss. Other ways in which synthroid may cause weight loss include:

Levothyroxine.Does this cause weight gain? Levothyroxine.Does this cause weight gain?
Levothyroxine.Does this cause weight gain?
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Has anyone experienced major weight gain after starting Levothyroxine?
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions
 Meanwhile my weight goes up and up. Totally fed up with it and lack of interest from Doctors. Votes: +0
GM
GMc 2 Apr 2019
Yes it causes weight gain
Answer this question Find similar questions
Further Information
Levothyroxine Information for Consumers
Levothyroxine Information for Healthcare Professionals (includes dosage details)
Side Effects of Levothyroxine (detailed)
Similar Questions
Has anyone experienced major weight gain after starting Levothyroxine? Updated 5 Sep 2019 • 43 answers
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A? Updated 24 Jul 2011 • 2 answers
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Updated 27 Nov 2014 • 12 answers
Is levothyroxine really that bad? Updated 29 Jan 2018 • 8 answers
Levothyroxine makes me gained weight? Updated 14 Sep 2017 • 1 answer
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Still looking for answers?

Levothyroxine.Does this cause weight gain?

Levothyroxine.Does this cause weight gain?
Levothyroxine.Does this cause weight gain?
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Updated
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Answer this question Find similar questions
Further Information
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Has anyone experienced major weight gain after starting Levothyroxine?
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions

Meanwhile my weight goes up and up. Totally fed up with it and lack of interest from Doctors. Votes: +0
GM
GMc 2 Apr 2019
Yes it causes weight gain
Answer this question Find similar questions
Further Information
Levothyroxine Information for Consumers
Levothyroxine Information for Healthcare Professionals (includes dosage details)
Side Effects of Levothyroxine (detailed)
Similar Questions
Has anyone experienced major weight gain after starting Levothyroxine? Updated 5 Sep 2019 • 43 answers
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A? Updated 24 Jul 2011 • 2 answers
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Updated 27 Nov 2014 • 12 answers
Is levothyroxine really that bad? Updated 29 Jan 2018 • 8 answers
Levothyroxine makes me gained weight? Updated 14 Sep 2017 • 1 answer
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Still looking for answers?

Levothyroxine - weight gain? Levothyroxine - weight gain?
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 Levothyroxine - weight gain? Q & A
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Levothyroxine - weight gain? Levothyroxine - weight gain? Asked
9 Jan 2012 by ruthgroff
Updated
19 February 2012
Topics
obesity, levothyroxine, weight
I just started taking 25 MCG of levothyroxine, I'm a 62 year old tired female. Really do not want to gain any weight , should I ask my Dr for some other drug? Answer this question
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RA
Rajive Goel 9 Jan 2012
Rather strangle that Levothyroxine has reported as one its side effects an increased appetite, along with weight loss, weight gain was not reprted. However, if you do think it could be one of its rare side effects, do please ask your doc to change your med. Please do take care, best wishes! Votes: +1
JO
Jovanna 9 Jan 2012
I am 63 and on 88mcg of Levothyroxine.

Levothyroxine - weight gain?

Levothyroxine - weight gain? Q & A
Questions
Levothyroxine - weight gain? Levothyroxine - weight gain? Asked
9 Jan 2012 by ruthgroff
Updated
19 February 2012
Topics
obesity, levothyroxine, weight
I just started taking 25 MCG of levothyroxine, I'm a 62 year old tired female. Really do not want to gain any weight , should I ask my Dr for some other drug? Answer this question
Answers (4)
Sort by
Oldest Newest Highest Rating Lowest Rating
RA
Rajive Goel 9 Jan 2012
Rather strangle that Levothyroxine has reported as one its side effects an increased appetite, along with weight loss, weight gain was not reprted. However, if you do think it could be one of its rare side effects, do please ask your doc to change your med. Please do take care, best wishes! Votes: +1
JO
Jovanna 9 Jan 2012
I am 63 and on 88mcg of Levothyroxine.

Levothyroxine.Does this cause weight gain? Levothyroxine.Does this cause weight gain?
Levothyroxine.Does this cause weight gain?
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Further Information
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Has anyone experienced major weight gain after starting Levothyroxine?
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions
 Hope this is helpful. Votes: +1
SH
Shenka 2 Apr 2019
I am so fed up with levothyroxine. Every time my blood tests show good results I start to feel unwell again. Dosage increased and then it all starts over. Meanwhile my weight goes up and up. Totally fed up with it and lack of interest from Doctors. Votes: +0
GM
GMc 2 Apr 2019
Yes it causes weight gain
Answer this question Find similar questions
Further Information
Levothyroxine Information for Consumers
Levothyroxine Information for Healthcare Professionals (includes dosage details)
Side Effects of Levothyroxine (detailed)
Similar Questions
Has anyone experienced major weight gain after starting Levothyroxine? Updated 5 Sep 2019 • 43 answers
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine.

Hope this is helpful. Votes: +1
SH
Shenka 2 Apr 2019
I am so fed up with levothyroxine. Every time my blood tests show good results I start to feel unwell again. Dosage increased and then it all starts over. Meanwhile my weight goes up and up. Totally fed up with it and lack of interest from Doctors. Votes: +0
GM
GMc 2 Apr 2019
Yes it causes weight gain
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Further Information
Levothyroxine Information for Consumers
Levothyroxine Information for Healthcare Professionals (includes dosage details)
Side Effects of Levothyroxine (detailed)
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Has anyone experienced major weight gain after starting Levothyroxine? Updated 5 Sep 2019 • 43 answers
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine.

Levothyroxine and weight GAIN? — MyFitnessPal.com Levothyroxine and weight GAIN?
Levothyroxine and weight GAIN?
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 8 Member
in General Health, Fitness and Diet
Hi, all. I was wondering if anyone else has taken levoythyroxine and experienced weight gain as opposed to loss? Several months ago, my endocrinologist had my thyroid levels tested. She said they were *just* under what is considered "normal" and that if it weren't for my prolactinoma, she wouldn't be treating for hypothyroidism at all. ( She thinks the size of the tumor is impacting my thyroid function.) I started Levothyroxine in February. When I went to my endocrinologist in February, I had actually lost 7lbs. When I saw her last week (5 months later), I had somehow gained weight -- about 10lbs worth. I asked her if it could be related to the levo, and she said no -- and then said that it was something that I had caused, even though I really haven't changed anything - if anything, I have actually become more active because I'm working more (retail) instead of sitting in school all day. Now, she wants to test for Type 2 Diabetes and a slew of other things and is contemplating putting me on another medication to "control my weight."

8 Member
in General Health, Fitness and Diet
Hi, all. I was wondering if anyone else has taken levoythyroxine and experienced weight gain as opposed to loss? Several months ago, my endocrinologist had my thyroid levels tested. She said they were *just* under what is considered "normal" and that if it weren't for my prolactinoma, she wouldn't be treating for hypothyroidism at all. ( She thinks the size of the tumor is impacting my thyroid function.) I started Levothyroxine in February. When I went to my endocrinologist in February, I had actually lost 7lbs. When I saw her last week (5 months later), I had somehow gained weight -- about 10lbs worth. I asked her if it could be related to the levo, and she said no -- and then said that it was something that I had caused, even though I really haven't changed anything - if anything, I have actually become more active because I'm working more (retail) instead of sitting in school all day. Now, she wants to test for Type 2 Diabetes and a slew of other things and is contemplating putting me on another medication to "control my weight."

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 Although synthroid is a synthetically-engineered form of thyroxine called “levothyroxine,” and isn’t bioidentical to endogenously secreted thyroxine (via properly functioning thyroid glands), it is similar enough to improve hypothyroidism biomarkers and symptoms. Assuming the dosage of synthroid is properly calibrated for the specific user, severe side effects and/or adverse reactions are unlikely. Most people are able to tolerate synthroid over a long-term (many years) without complaints of unwanted side effects. Despite the favorable tolerability of synthroid for most users, a subset of users report significant unwanted synthroid side effects, one of which is often weight gain. It is unclear as to how synthroid may cause weight gain as most literature suggests that it is “weight neutral” or unlikely to affect body weight. However, there is some evidence to suggest that older adults (ages 45 and up) may gain weight as a result of synthroid treatment. Synthroid (Levothyroxine) and Weight Gain
Firstly, it is important note that most medical literature suggests that synthroid does NOT cause significant weight gain. However, assuming you haven’t made any profound changes in eating habits, activity/exercise level, etc. while taking synthroid, yet you’ve packed on a noticeable amount of poundage – it’s probably safe to assume that it was triggered by the drug. Just because the majority of synthroid users are unlikely to gain weight, does not mean that synthroid-induced weight gain should be dismissed as a medical impossibility.

Although synthroid is a synthetically-engineered form of thyroxine called “levothyroxine,” and isn’t bioidentical to endogenously secreted thyroxine (via properly functioning thyroid glands), it is similar enough to improve hypothyroidism biomarkers and symptoms. Assuming the dosage of synthroid is properly calibrated for the specific user, severe side effects and/or adverse reactions are unlikely. Most people are able to tolerate synthroid over a long-term (many years) without complaints of unwanted side effects. Despite the favorable tolerability of synthroid for most users, a subset of users report significant unwanted synthroid side effects, one of which is often weight gain. It is unclear as to how synthroid may cause weight gain as most literature suggests that it is “weight neutral” or unlikely to affect body weight. However, there is some evidence to suggest that older adults (ages 45 and up) may gain weight as a result of synthroid treatment. Synthroid (Levothyroxine) and Weight Gain
Firstly, it is important note that most medical literature suggests that synthroid does NOT cause significant weight gain. However, assuming you haven’t made any profound changes in eating habits, activity/exercise level, etc. while taking synthroid, yet you’ve packed on a noticeable amount of poundage – it’s probably safe to assume that it was triggered by the drug. Just because the majority of synthroid users are unlikely to gain weight, does not mean that synthroid-induced weight gain should be dismissed as a medical impossibility.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) is among the most popular pharmaceutical medications in the United States; over 120 million prescriptions were filled for the drug within the past year. It is a synthetically engineered form of thyroxine (T4), an endogenous thyroid hormone produced by follicular cells within the thyroid gland. Among individuals diagnosed with hypothyroidism, the body is unable to produce adequate T4 (thyroxine) via the thyroid gland, which has deleterious effects upon DNA transcription, protein synthesis, and a multitude of neurophysiological processes. As a result, individuals with hypothyroidism often exhibit symptoms such as: cognitive deficits, depression, dry skin, fatigue, malaise, and weight gain. Regular administration of synthroid (levothyroxine) is thought to reverse the aforementioned symptoms of hypothyroidism and improve functionality of the user. After several months of properly-dosed synthroid, users often report:

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) is among the most popular pharmaceutical medications in the United States; over 120 million prescriptions were filled for the drug within the past year. It is a synthetically engineered form of thyroxine (T4), an endogenous thyroid hormone produced by follicular cells within the thyroid gland. Among individuals diagnosed with hypothyroidism, the body is unable to produce adequate T4 (thyroxine) via the thyroid gland, which has deleterious effects upon DNA transcription, protein synthesis, and a multitude of neurophysiological processes. As a result, individuals with hypothyroidism often exhibit symptoms such as: cognitive deficits, depression, dry skin, fatigue, malaise, and weight gain. Regular administration of synthroid (levothyroxine) is thought to reverse the aforementioned symptoms of hypothyroidism and improve functionality of the user. After several months of properly-dosed synthroid, users often report:

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 In other words, regular administration of synthetic thyroxine (levothyroxine) may alter the densities of particular gut bacterium. As a result of changes in gut bacteria associated with synthroid, users may gain weight without any dietary or exercise changes solely resulting from bacteria in the gut. Low energy: Not everyone feels energetic and spry after taking synthroid. Some individuals report feeling lower energy after taking synthroid than prior to treatment. If you notice that you become increasingly fatigued and/or lethargic throughout treatment, chances are that you’ll gain some weight. Fatigue makes it difficult to remain physically active, engage in regular exercise (to burn calories and keep metabolism high), and also difficult to make healthy decisions regarding foods to eat. Neurotransmission: Regular administration of synthroid may decrease concentrations of dopamine. Precursors such as tyrosine appear to decrease in the brain of rodents regularly administered synthroid.

In other words, regular administration of synthetic thyroxine (levothyroxine) may alter the densities of particular gut bacterium. As a result of changes in gut bacteria associated with synthroid, users may gain weight without any dietary or exercise changes solely resulting from bacteria in the gut. Low energy: Not everyone feels energetic and spry after taking synthroid. Some individuals report feeling lower energy after taking synthroid than prior to treatment. If you notice that you become increasingly fatigued and/or lethargic throughout treatment, chances are that you’ll gain some weight. Fatigue makes it difficult to remain physically active, engage in regular exercise (to burn calories and keep metabolism high), and also difficult to make healthy decisions regarding foods to eat. Neurotransmission: Regular administration of synthroid may decrease concentrations of dopamine. Precursors such as tyrosine appear to decrease in the brain of rodents regularly administered synthroid.

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 Adequate deep sleep keeps the metabolism within a healthy range and allows the body to produce hormones to prevent weight gain. Lack of sleep increases ghrelin (the hunger hormone) and may disrupt other metabolic processes, ultimately leading to weight gain. Since synthroid administration may cause insomnia and sleep disturbances in some users, its interference with a good night’s sleep may indirectly contribute to weight gain. ( Source: http://www.ncbi.nlm.nih.gov/pubmed/18564298). Synthetic reaction: The fact that synthroid is a synthetic, rather than bioidentical hormone is problematic for many users. The chemical structure of synthroid differs from endogenously produced thyroxine (T4), and as a result, it may provoke abnormal and unpredictable neurophysiological reactions in users. Weight gain may be one of many possible implications associated with using a synthetically-manufactured hormone, as opposed to one that is endogenously secreted (or even bioidentical). Variables that may influence weight gain from Synthroid (Levothyroxine)
Whenever contemplating the weight you’ve gained from synthroid, it may be helpful to consider influential variables.

Adequate deep sleep keeps the metabolism within a healthy range and allows the body to produce hormones to prevent weight gain. Lack of sleep increases ghrelin (the hunger hormone) and may disrupt other metabolic processes, ultimately leading to weight gain. Since synthroid administration may cause insomnia and sleep disturbances in some users, its interference with a good night’s sleep may indirectly contribute to weight gain. ( Source: http://www.ncbi.nlm.nih.gov/pubmed/18564298). Synthetic reaction: The fact that synthroid is a synthetic, rather than bioidentical hormone is problematic for many users. The chemical structure of synthroid differs from endogenously produced thyroxine (T4), and as a result, it may provoke abnormal and unpredictable neurophysiological reactions in users. Weight gain may be one of many possible implications associated with using a synthetically-manufactured hormone, as opposed to one that is endogenously secreted (or even bioidentical). Variables that may influence weight gain from Synthroid (Levothyroxine)
Whenever contemplating the weight you’ve gained from synthroid, it may be helpful to consider influential variables.

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss?
Is There a Connection between Levothyroxine and Weight Loss?
Erik J.J. Goserud
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 Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss? Erik J.J. Goserud
Last Modified Date: February 12, 2021
Erik J.J. Goserud
Date: February 12, 2021
Levothyroxine is most often used to treat hypothyroidism. Levothyroxine and weight loss are indeed correlated in that a common adverse effect of this drug is loss of appetite and weight. This medication is a synthetic of the hormone it strives to mimic — thyroxine. It is primarily used in the treatment of numerous thyroid conditions. Of all conditions related to the thyroid, hypothyroidism is the most common ailment in which levothyroxine is prescribed. The prefix hypo generally means under or less, which translates hypothyroidism into not enough thyroid action.

Is There a Connection between Levothyroxine and Weight Loss? Is There a Connection between Levothyroxine and Weight Loss? Erik J.J. Goserud
Last Modified Date: February 12, 2021
Erik J.J. Goserud
Date: February 12, 2021
Levothyroxine is most often used to treat hypothyroidism. Levothyroxine and weight loss are indeed correlated in that a common adverse effect of this drug is loss of appetite and weight. This medication is a synthetic of the hormone it strives to mimic — thyroxine. It is primarily used in the treatment of numerous thyroid conditions. Of all conditions related to the thyroid, hypothyroidism is the most common ailment in which levothyroxine is prescribed. The prefix hypo generally means under or less, which translates hypothyroidism into not enough thyroid action.

Weight Loss With Levothyroxine Medication | Livestrong.com Weight Loss With Levothyroxine Medication
Weight Loss With Levothyroxine Medication
Metabolism and Weight Loss
Dietary Guidelines -- Carbohydrates
Calories, Weight Loss and Metabolism
Levothyroxine Interactions and Iodine
references
 Weight Loss With Levothyroxine Medication | Livestrong.com
Weight Management
Weight Loss
Medical Weight Loss Procedures
Weight Loss With Levothyroxine Medication
By Maura Shenker
ABOUT THE AUTHOR
Maura Shenker
Maura Shenker is a certified holistic nutritionist and health counselor who started her writing career in 2010. She leads group workshops, counsels individual clients and blogs about diet and lifestyle choices. She holds a Bachelor of Fine Arts from the Rhode Island School of Design, a Master of Fine Arts from The Ohio State University and is a graduate of the Institute for Integrative Nutrition. View Work
Levothyroxine can interfere with the absorption of other medications. Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Part of your endocrine system, your thyroid gland is located at the base of your throat and creates the hormones that control how quickly you use both oxygen and energy -- the basis of your metabolism. A sluggish thyroid doesn't produce enough hormones; as a result your metabolism slows down -- which can easily lead to weight gain. Once you begin to take levothyroxine, your metabolism will normalize and weight loss should be easier. Metabolism and Weight Loss
Weight loss with hypothyroidism can be challenging because a slower metabolism results in fewer calories being used.

Weight Loss With Levothyroxine Medication | Livestrong.com
Weight Management
Weight Loss
Medical Weight Loss Procedures
Weight Loss With Levothyroxine Medication
By Maura Shenker
ABOUT THE AUTHOR
Maura Shenker
Maura Shenker is a certified holistic nutritionist and health counselor who started her writing career in 2010. She leads group workshops, counsels individual clients and blogs about diet and lifestyle choices. She holds a Bachelor of Fine Arts from the Rhode Island School of Design, a Master of Fine Arts from The Ohio State University and is a graduate of the Institute for Integrative Nutrition. View Work
Levothyroxine can interfere with the absorption of other medications. Levothyroxine is a synthetic thyroid hormone prescribed to treat low thyroid function, also known as hypothyroidism. Part of your endocrine system, your thyroid gland is located at the base of your throat and creates the hormones that control how quickly you use both oxygen and energy -- the basis of your metabolism. A sluggish thyroid doesn't produce enough hormones; as a result your metabolism slows down -- which can easily lead to weight gain. Once you begin to take levothyroxine, your metabolism will normalize and weight loss should be easier. Metabolism and Weight Loss
Weight loss with hypothyroidism can be challenging because a slower metabolism results in fewer calories being used.

Synthroid (Levothyroxine) & Weight Loss: A Common Experience - Mental Health Daily Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) & Weight Loss: A Common Experience
Synthroid (Levothyroxine) and Weight Loss: A Common Experience
How Synthroid (Levothyroxine) May Cause Weight Loss
Variables that may influence weight loss from Synthroid (Levothyroxine)
Synthroid Dosage
Time span
Hypothyroidism details
Co-administered substances
Other individual factors
Synthroid (Levothyroxine) & Weight Loss: The Research
How much weight will you lose while taking synthroid (levothyroxine)?
Does everybody lose weight while taking synthroid (levothyroxine)?
Have you lost weight while taking Synthroid (levothyroxine)?
 clearer thinking, increased energy, mood improvements, and perhaps most noticeably – weight loss. Weight loss is often among the most discussed synthroid side effects due to the fact that nearly everyone wants to look good and maintain a healthy physique. Additionally, many individuals had gained a significant amount of weight prior to using synthroid (as a result of hypothyroidism), a condition which slows metabolism. When metabolic processes are corrected as a result of synthroid, users end up losing weight and the weight loss comes as a pleasant surprise. Synthroid (Levothyroxine) and Weight Loss: A Common Experience
If you’ve lived with hypothyroidism, there’s a chance that you may have gained some weight as a result of the condition. The chief purpose of thyroid hormone is to regulate the body’s metabolism, and when an individual is struggling with a thyroid deficiency, basal metabolic rate (BMR) plummets. Individuals with hypothyroidism may: cut calories, eat a healthy diet, exercise plenty – yet still end up gaining weight due to their slower basal metabolic rate; fewer calories are being burned at rest.

clearer thinking, increased energy, mood improvements, and perhaps most noticeably – weight loss. Weight loss is often among the most discussed synthroid side effects due to the fact that nearly everyone wants to look good and maintain a healthy physique. Additionally, many individuals had gained a significant amount of weight prior to using synthroid (as a result of hypothyroidism), a condition which slows metabolism. When metabolic processes are corrected as a result of synthroid, users end up losing weight and the weight loss comes as a pleasant surprise. Synthroid (Levothyroxine) and Weight Loss: A Common Experience
If you’ve lived with hypothyroidism, there’s a chance that you may have gained some weight as a result of the condition. The chief purpose of thyroid hormone is to regulate the body’s metabolism, and when an individual is struggling with a thyroid deficiency, basal metabolic rate (BMR) plummets. Individuals with hypothyroidism may: cut calories, eat a healthy diet, exercise plenty – yet still end up gaining weight due to their slower basal metabolic rate; fewer calories are being burned at rest.

Levothyroxine.Does this cause weight gain? Levothyroxine.Does this cause weight gain?
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Has anyone experienced major weight gain after starting Levothyroxine?
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
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 However, the side effects also say it can cause weight loss). If is has caused increase in appetite for you then it surely will cause weight gain. Votes: +0
RN
RN1270 8 May 2013
You are probably on 125 mcg (micrograms) or 1.25 mg (milligrams), not 125 mg (milligrams) per day. The average FULL REPLACEMENT DOSE of levothyroxine sodium is about 1.7 mcg/kg/day (e.g., 100-125 mcg/day (or 1 - 1.25 mg/day) for a 70 kg adult (154 lbs)). Doses greater than 200 mcg/day (or 2 mg/day) are not usually required. So 125 mcg (1.25 mg) per day is in the normal dose range, but only your blood tests will tell whether it is the correct dose for you. It may take time and re-checking of your labs to get the correct blood levels. As for the weight gain ... if you are not eating any more than you did before you started treatment (possible side effect is increased appetite), then - are you retaining fluid?? That is a possibility, or your dose may need to be adjusted.

However, the side effects also say it can cause weight loss). If is has caused increase in appetite for you then it surely will cause weight gain. Votes: +0
RN
RN1270 8 May 2013
You are probably on 125 mcg (micrograms) or 1.25 mg (milligrams), not 125 mg (milligrams) per day. The average FULL REPLACEMENT DOSE of levothyroxine sodium is about 1.7 mcg/kg/day (e.g., 100-125 mcg/day (or 1 - 1.25 mg/day) for a 70 kg adult (154 lbs)). Doses greater than 200 mcg/day (or 2 mg/day) are not usually required. So 125 mcg (1.25 mg) per day is in the normal dose range, but only your blood tests will tell whether it is the correct dose for you. It may take time and re-checking of your labs to get the correct blood levels. As for the weight gain ... if you are not eating any more than you did before you started treatment (possible side effect is increased appetite), then - are you retaining fluid?? That is a possibility, or your dose may need to be adjusted.

Synthroid and Weight Loss - Thyroid Advisor Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References
 Of course, it all depends on the severity of hypothyroidism [5], the American Thyroid Association adds. Synthroid and weight loss
Synthroid, levothyroxine, is a synthetic version of hormone thyroxine (T4) produced by the thyroid gland. In hypothyroid patients, the thyroid gland produces an insufficient amount of this hormone (and T3) or doesn’t produce anything at all ( see this article for more information on thyroid basics and common questions.) The medication works to replace this naturally-produced hormone and ensure the body has sufficient levels of T4 to regulate metabolism, energy, and to prevent goiter. The T4 requirements of an individual can change due to weight loss. One study studied the T4 requirements in obese participants with acquired hypothyroidism before and after they underwent bariatric surgery to induce weight loss. For this purpose, they enrolled 93 hypothyroid patients and discovered that weight loss led to a significant reduction of the total dose of T4. Their findings demonstrated that reduction of the T4 dose was proportional to decrease in lean body mass [6]. Basically, the bigger the weight loss, the lower the dose is necessary. The study whose findings were mentioned below suggests that weight loss changes requirements for T4 and dropping a few pounds can also lead to the decreased dosage of the medication.

Synthroid and Weight Loss - Thyroid Advisor

Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References

Of course, it all depends on the severity of hypothyroidism [5], the American Thyroid Association adds. Synthroid and weight loss
Synthroid, levothyroxine, is a synthetic version of hormone thyroxine (T4) produced by the thyroid gland. In hypothyroid patients, the thyroid gland produces an insufficient amount of this hormone (and T3) or doesn’t produce anything at all ( see this article for more information on thyroid basics and common questions.) The medication works to replace this naturally-produced hormone and ensure the body has sufficient levels of T4 to regulate metabolism, energy, and to prevent goiter. The T4 requirements of an individual can change due to weight loss. One study studied the T4 requirements in obese participants with acquired hypothyroidism before and after they underwent bariatric surgery to induce weight loss. For this purpose, they enrolled 93 hypothyroid patients and discovered that weight loss led to a significant reduction of the total dose of T4. Their findings demonstrated that reduction of the T4 dose was proportional to decrease in lean body mass [6]. Basically, the bigger the weight loss, the lower the dose is necessary. The study whose findings were mentioned below suggests that weight loss changes requirements for T4 and dropping a few pounds can also lead to the decreased dosage of the medication.

Why Levothyroxine Causes Weight Gain and How to Prevent it Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs
 Don't let your doctor convince you that you are hyperthyroid when you have crushing fatigue, weight gain, hair loss and constipation - it just doesn't work that way and you can't tell someone they are hyperthyroid based on their TSH alone. Here is another very interesting study (2) that compared people taking Natural Desiccated Thyroid to those taking Levothyroxine: This study showed that patients taking Natural Desiccated Thyroid (Like Armour thyroid, Nature-Throid, and WP Thyroid) experienced more weight loss and HALF of the people in the study said that they preferred taking NDT over levothyroxine. And here is another very important study (3) comparing equivalent dosing (based on pituitary function and TSH) of T4 medication vs T3 only medication: This study showed that patients who were taking T3 only medication had more weight loss and better cholesterol than patients who were taking T4 only medication (like Synthroid and Levothyroxine). What's also important is that the patients who took T3 did not have any change in blood pressure, heart rate or insulin sensitivity. Meaning the T3 only thyroid medication was tolerated very well. So now we have several different studies showing that patients not only do VERY well on medications containing T3 thyroid hormone but that these medications are also WELL tolerated. You can read more about the use of T3 only medication (Liothyronine and Cytomel) for weight loss here. Moral of the story?

Why Levothyroxine Causes Weight Gain and How to Prevent it

Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs

Don't let your doctor convince you that you are hyperthyroid when you have crushing fatigue, weight gain, hair loss and constipation - it just doesn't work that way and you can't tell someone they are hyperthyroid based on their TSH alone. Here is another very interesting study (2) that compared people taking Natural Desiccated Thyroid to those taking Levothyroxine: This study showed that patients taking Natural Desiccated Thyroid (Like Armour thyroid, Nature-Throid, and WP Thyroid) experienced more weight loss and HALF of the people in the study said that they preferred taking NDT over levothyroxine. And here is another very important study (3) comparing equivalent dosing (based on pituitary function and TSH) of T4 medication vs T3 only medication: This study showed that patients who were taking T3 only medication had more weight loss and better cholesterol than patients who were taking T4 only medication (like Synthroid and Levothyroxine). What's also important is that the patients who took T3 did not have any change in blood pressure, heart rate or insulin sensitivity. Meaning the T3 only thyroid medication was tolerated very well. So now we have several different studies showing that patients not only do VERY well on medications containing T3 thyroid hormone but that these medications are also WELL tolerated. You can read more about the use of T3 only medication (Liothyronine and Cytomel) for weight loss here. Moral of the story?

Why Synthroid isn’t Causing Weight Loss and How to Fix it Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs
 This isn't to say that it will have this effect in every person, because that's certainly not the case. In fact, most people do still need some T4 medication, the problem is that they also need pure T3 medication and most Doctors don't frequently prescribe T3 containing medications. The amount of T3 that you need depends generally on how many chronic medical problems you have or how sick you are. The sicker the patient, the more T3 they generally need. If your plan is to take Synthroid or levothyroxine for weight loss and you aren't hypothyroid then you are most certainly out of luck. Because even if you have hypothyroidism it's NOT likely to cause significant weight loss by itself (6), except for certain circumstances. Studies have shown that even taking suppressive doses of LT4 (levothyroxine) to lower the TSH does NOT result in weight loss. But this study did show that lowering the TSH did slightly increase the basal metabolic rate of women, but not enough to normalize free T3 levels. How Long Before Synthroid Helps with Weight Loss? So why is it that some people are able to lose weight on Synthroid while other patients don't lose any weight and some very unlucky patients actually gain weight on it?

Why Synthroid isn’t Causing Weight Loss and How to Fix it

Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs

This isn't to say that it will have this effect in every person, because that's certainly not the case. In fact, most people do still need some T4 medication, the problem is that they also need pure T3 medication and most Doctors don't frequently prescribe T3 containing medications. The amount of T3 that you need depends generally on how many chronic medical problems you have or how sick you are. The sicker the patient, the more T3 they generally need. If your plan is to take Synthroid or levothyroxine for weight loss and you aren't hypothyroid then you are most certainly out of luck. Because even if you have hypothyroidism it's NOT likely to cause significant weight loss by itself (6), except for certain circumstances. Studies have shown that even taking suppressive doses of LT4 (levothyroxine) to lower the TSH does NOT result in weight loss. But this study did show that lowering the TSH did slightly increase the basal metabolic rate of women, but not enough to normalize free T3 levels. How Long Before Synthroid Helps with Weight Loss? So why is it that some people are able to lose weight on Synthroid while other patients don't lose any weight and some very unlucky patients actually gain weight on it?

Levothyroxine: 7 things you should know - Drugs.com Levothyroxine: 7 things you should know
Levothyroxine: 7 things you should know
1. How it works
2. Upsides
3. Downsides
4. Bottom Line
5. Tips
6. Response and Effectiveness
7. Interactions
More about levothyroxine
Consumer resources
Other brands
Professional resources
Related treatment guides
References
Further information
 Levothyroxine is recommended by American guidelines as the preferred hormone for hypothyroidism. It is effective for all causes of hypothyroidism, except transient hypothyroidism caused by subacute thyroiditis (an inflammatory disease of the thyroid most likely caused by a virus). May also be used in the management of goiter and some thyroid cancers. Generic levothyroxine is available. 3. Downsides
If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include: May increase heart rate, cause arrhythmias (palpitations), precipitate angina, and have other adverse effects on the heart. A headache, hair loss, flushing, diarrhea, and menstrual irregularities in women are also reasonably common. May cause weight loss; however, thyroxine should not be used for the sole purpose of treating obesity as its risks far outweigh any benefits when used in people with normal thyroid function.

Levothyroxine: 7 things you should know - Drugs.com

Levothyroxine: 7 things you should know
Levothyroxine: 7 things you should know
1. How it works
2. Upsides
3. Downsides
4. Bottom Line
5. Tips
6. Response and Effectiveness
7. Interactions
More about levothyroxine
Consumer resources
Other brands
Professional resources
Related treatment guides
References
Further information

Levothyroxine is recommended by American guidelines as the preferred hormone for hypothyroidism. It is effective for all causes of hypothyroidism, except transient hypothyroidism caused by subacute thyroiditis (an inflammatory disease of the thyroid most likely caused by a virus). May also be used in the management of goiter and some thyroid cancers. Generic levothyroxine is available. 3. Downsides
If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include: May increase heart rate, cause arrhythmias (palpitations), precipitate angina, and have other adverse effects on the heart. A headache, hair loss, flushing, diarrhea, and menstrual irregularities in women are also reasonably common. May cause weight loss; however, thyroxine should not be used for the sole purpose of treating obesity as its risks far outweigh any benefits when used in people with normal thyroid function.

Why Levothyroxine Causes Weight Gain and How to Prevent it Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs
 Most patients not only prefer to take Natural desiccated thyroid (medication that includes T3 hormone) but this medication also results in more weight loss and an improved quality of life. One of the biggest problems with T4 only medication is that your body may NOT be converting it to the active T3 thyroid hormone. In many patients, your body may actually convert it to reverse T3 thereby slowing your metabolism, and actually making your condition and symptoms WORSE. But here is another important note side note: Natural Desiccated Thyroid still contains T4 (in fact the majority is still T4).
That means that sometimes NDT can actually make hypothyroid symptoms worse as well by increasing reverse T3. People with this problem need pure T3 medications like Liothyronine to improve symptoms and lose weight. You can read more about case studies using NDT with T3 medications here.
What to do if you think Levothyroxine is Causing Weight Gain
If you have constantly gained weight (or even if you just aren't losing weight) there are several steps you can take to figure out if the dose of thyroid medication you are taking is working in your body. You can find a guide on how to properly dose Levothyroxine here.

Most patients not only prefer to take Natural desiccated thyroid (medication that includes T3 hormone) but this medication also results in more weight loss and an improved quality of life. One of the biggest problems with T4 only medication is that your body may NOT be converting it to the active T3 thyroid hormone. In many patients, your body may actually convert it to reverse T3 thereby slowing your metabolism, and actually making your condition and symptoms WORSE. But here is another important note side note: Natural Desiccated Thyroid still contains T4 (in fact the majority is still T4).
That means that sometimes NDT can actually make hypothyroid symptoms worse as well by increasing reverse T3. People with this problem need pure T3 medications like Liothyronine to improve symptoms and lose weight. You can read more about case studies using NDT with T3 medications here.
What to do if you think Levothyroxine is Causing Weight Gain
If you have constantly gained weight (or even if you just aren't losing weight) there are several steps you can take to figure out if the dose of thyroid medication you are taking is working in your body. You can find a guide on how to properly dose Levothyroxine here.

Why Levothyroxine Causes Weight Gain and How to Prevent it Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs
 And in states such as these, your body will turn T4 into reverse T3 as a way to "put on the brakes" and slow down your metabolism and cause symptoms of hypothyroidism. How Levothyroxine Causes weight gain
So how does this all relate to Levothyroxine and weight gain? We can look at some studies to help us understand: Take for instance this study. ( 1)
Patients in this study were given T4 only medications and treated based on their TSH. The researchers tested their resting energy expenditure (this is a way to test for basal metabolic rate or metabolism) both before they added the thyroid hormone and after they suppressed the TSH. Do you know what they found? It showed that patients taking thyroid hormone (even doses that lower the TSH to <0.1) did NOT have an increase in metabolism or a change in their body weight.
This is really interesting information and it has profound implications for treatment...
For one it shows that our reliance upon TSH as a marker for managing thyroid medication and function is not very accurate.
Don't get discouraged because there are other thyroid medications that actually do help with weight loss which we will discuss below.

And in states such as these, your body will turn T4 into reverse T3 as a way to "put on the brakes" and slow down your metabolism and cause symptoms of hypothyroidism. How Levothyroxine Causes weight gain
So how does this all relate to Levothyroxine and weight gain? We can look at some studies to help us understand: Take for instance this study. ( 1)
Patients in this study were given T4 only medications and treated based on their TSH. The researchers tested their resting energy expenditure (this is a way to test for basal metabolic rate or metabolism) both before they added the thyroid hormone and after they suppressed the TSH. Do you know what they found? It showed that patients taking thyroid hormone (even doses that lower the TSH to <0.1) did NOT have an increase in metabolism or a change in their body weight.
This is really interesting information and it has profound implications for treatment...
For one it shows that our reliance upon TSH as a marker for managing thyroid medication and function is not very accurate.
Don't get discouraged because there are other thyroid medications that actually do help with weight loss which we will discuss below.

Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction - Mental Health Daily Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) & Weight Gain: An Uncommon Reaction
Synthroid (Levothyroxine) and Weight Gain
How Synthroid May Cause Weight Gain (Possibilities)
Variables that may influence weight gain from Synthroid (Levothyroxine)
Synthroid dosage
Duration of administration
Other medications
Individual factors
Synthroid (Levothyroxine) & Weight Gain (The Research)
How much weight will you gain from synthroid (levothyroxine)?
Does everyone gain weight from taking synthroid (levothyroxine)?
Have you experienced weight gain from synthroid (levothyroxine)?
 However, there is some evidence to suggest that older adults (ages 45 and up) may gain weight as a result of synthroid treatment. Synthroid (Levothyroxine) and Weight Gain
Firstly, it is important note that most medical literature suggests that synthroid does NOT cause significant weight gain. However, assuming you haven’t made any profound changes in eating habits, activity/exercise level, etc. while taking synthroid, yet you’ve packed on a noticeable amount of poundage – it’s probably safe to assume that it was triggered by the drug. Just because the majority of synthroid users are unlikely to gain weight, does not mean that synthroid-induced weight gain should be dismissed as a medical impossibility. There’s never a one-size-fits-all response to medications – responses (and especially synthroid side effects) are subject to interindividual variation. While most people may not gain weight from synthroid, you may happen to be the outlier who ends up packing on the poundage; possibly to a significant extent. It may be frustrating to inquire about synthroid as the culprit for your weight gain to a medical professional, especially if you are told “synthroid does not cause weight gain.” Other content on MentalHealthDaily.com
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This may lead you assess any recent changes in:

However, there is some evidence to suggest that older adults (ages 45 and up) may gain weight as a result of synthroid treatment. Synthroid (Levothyroxine) and Weight Gain
Firstly, it is important note that most medical literature suggests that synthroid does NOT cause significant weight gain. However, assuming you haven’t made any profound changes in eating habits, activity/exercise level, etc. while taking synthroid, yet you’ve packed on a noticeable amount of poundage – it’s probably safe to assume that it was triggered by the drug. Just because the majority of synthroid users are unlikely to gain weight, does not mean that synthroid-induced weight gain should be dismissed as a medical impossibility. There’s never a one-size-fits-all response to medications – responses (and especially synthroid side effects) are subject to interindividual variation. While most people may not gain weight from synthroid, you may happen to be the outlier who ends up packing on the poundage; possibly to a significant extent. It may be frustrating to inquire about synthroid as the culprit for your weight gain to a medical professional, especially if you are told “synthroid does not cause weight gain.” Other content on MentalHealthDaily.com
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Is it safe to take levothyroxine to lose weight? Is it safe to take levothyroxine to lose weight?
Is it safe to take levothyroxine to lose weight?
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Armour Thyroid - How do I find a doc who will prescribe Armour?
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 These symptoms include nervousness, insomnia, emotional swings, sweating, hand tremor, hair loss, sensitivity to warm temperatures (feeling hot all the time), muscle weakness, shortness of breath, heart failure and angina, confusion and disorientation. Periods may stop. Stroke, shock, coma and death have been reported as symptoms of overdosage. The best way to lose weight is to cut back calories and increase activity, especially aerobic activity, to burn stored fat. For more information on weight loss visit: https://www.drugs.com/condition/weight-loss.html
Votes: +0
MA
Marvell 27 Nov 2012
Who prescribed you levothyroxine to lose weight? Votes: +3
NI
nickki 116 27 Nov 2012
no one perscribe it to me a friend had a few left over so i been taking them i am aware that i should not take someone else drugs but i tried it even though i dont have a thyroid problem currently i am taking 0.50MG before breakfast what can this do to my body if i have a normal thyroid function
MA
Marvell 27 Nov 2012
It is definitely not right to introduce extra hormones into your body, if you don't need it. Too much of something can cause problems and as thyroid hormones can also affect the production of other hormones... your body could be doing things which are not ideal.

These symptoms include nervousness, insomnia, emotional swings, sweating, hand tremor, hair loss, sensitivity to warm temperatures (feeling hot all the time), muscle weakness, shortness of breath, heart failure and angina, confusion and disorientation. Periods may stop. Stroke, shock, coma and death have been reported as symptoms of overdosage. The best way to lose weight is to cut back calories and increase activity, especially aerobic activity, to burn stored fat. For more information on weight loss visit: https://www.drugs.com/condition/weight-loss.html
Votes: +0
MA
Marvell 27 Nov 2012
Who prescribed you levothyroxine to lose weight? Votes: +3
NI
nickki 116 27 Nov 2012
no one perscribe it to me a friend had a few left over so i been taking them i am aware that i should not take someone else drugs but i tried it even though i dont have a thyroid problem currently i am taking 0.50MG before breakfast what can this do to my body if i have a normal thyroid function
MA
Marvell 27 Nov 2012
It is definitely not right to introduce extra hormones into your body, if you don't need it. Too much of something can cause problems and as thyroid hormones can also affect the production of other hormones... your body could be doing things which are not ideal.

Synthroid and Weight Loss - Thyroid Advisor Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References
 Now, we have to wonder about the impact of Synthroid or levothyroxine on weight loss itself. Can it help overweight hypothyroid patients slim down? We are led to believe that treatment of hypothyroidism and getting hormones in check would help us control our weight and lose a few pounds. The reality is different in many cases, one study found. A group of researchers at the Boston University School of Medicine carried out a study which showed that modest weight loss after levothyroxine treatment occurs only in half of hypothyroid patients. Scientists were surprised to discover that only a few studies looked into the relationship between levothyroxine medication and weight loss in the hypothyroid patient. This is, indeed, surprising if we bear in mind that overweight/obesity are common in hypothyroidism. One would expect more studies to be conducted on this subject. Modest weight loss or lack of it in hypothyroid patients who receive treatment with levothyroxine isn’t only due to the drug itself. The outcome depends on the severity of hypothyroidism, treatment adequacy, and a subsequent calorie intake of an individual [7].

Now, we have to wonder about the impact of Synthroid or levothyroxine on weight loss itself. Can it help overweight hypothyroid patients slim down? We are led to believe that treatment of hypothyroidism and getting hormones in check would help us control our weight and lose a few pounds. The reality is different in many cases, one study found. A group of researchers at the Boston University School of Medicine carried out a study which showed that modest weight loss after levothyroxine treatment occurs only in half of hypothyroid patients. Scientists were surprised to discover that only a few studies looked into the relationship between levothyroxine medication and weight loss in the hypothyroid patient. This is, indeed, surprising if we bear in mind that overweight/obesity are common in hypothyroidism. One would expect more studies to be conducted on this subject. Modest weight loss or lack of it in hypothyroid patients who receive treatment with levothyroxine isn’t only due to the drug itself. The outcome depends on the severity of hypothyroidism, treatment adequacy, and a subsequent calorie intake of an individual [7].

Levothyroxine Side Effects - Health Hearty Levothyroxine Side Effects
Levothyroxine Side Effects
Adverse Effects of Levothyroxine
Minor Side Effects
Allergic Reactions
Long-term Overdose Side Effects
Massive Overdose Symptoms
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 Adverse Effects of Levothyroxine
Levothyroxine may not cause any adverse reaction, if the dosage is aptly tailored to the user’s requirement. Tests are conducted at regular intervals, and the dosage is adjusted from time to time, on the basis of test results, so as to avoid long-term side effects of the drug. Minor Side Effects
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Let's Work Together! Usually, levothyroxine users experience some minor adverse reactions that may subside without any treatment. Such side effects disappear as the body gets adjusted to the treatment. However, you must inform your healthcare provider, who can guide you with some tips to prevent or reduce such side effects, which are given below. Hair loss, headache, weakness
Change in appetite, weight loss or weight gain
Nervousness, depression, mood swings
These are some of the symptoms experienced by most of the users during the initial days of treatment. However, medical attention must be sought in case the symptoms persist or worsen.

Levothyroxine Side Effects - Health Hearty

Levothyroxine Side Effects
Levothyroxine Side Effects
Adverse Effects of Levothyroxine
Minor Side Effects
Allergic Reactions
Long-term Overdose Side Effects
Massive Overdose Symptoms
Like it? Share it!

Adverse Effects of Levothyroxine
Levothyroxine may not cause any adverse reaction, if the dosage is aptly tailored to the user’s requirement. Tests are conducted at regular intervals, and the dosage is adjusted from time to time, on the basis of test results, so as to avoid long-term side effects of the drug. Minor Side Effects
Would you like to write for us? Well, we're looking for good writers who want to spread the word. Get in touch with us and we'll talk...
Let's Work Together! Usually, levothyroxine users experience some minor adverse reactions that may subside without any treatment. Such side effects disappear as the body gets adjusted to the treatment. However, you must inform your healthcare provider, who can guide you with some tips to prevent or reduce such side effects, which are given below. Hair loss, headache, weakness
Change in appetite, weight loss or weight gain
Nervousness, depression, mood swings
These are some of the symptoms experienced by most of the users during the initial days of treatment. However, medical attention must be sought in case the symptoms persist or worsen.

Has anyone experienced major weight gain after starting Levothyroxine? Has anyone experienced major weight gain after starting Levothyroxine?
Has anyone experienced major weight gain after starting Levothyroxine?
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My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
Levothyroxine.Does this cause weight gain?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
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 Has anyone experienced major weight gain after starting Levothyroxine? Q & A
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Has anyone experienced major...
Has anyone experienced major weight gain after starting Levothyroxine? Asked
18 Mar 2010 by yorkgreeneyes
Updated
5 September 2019
Topics
underactive thyroid, thyroid disease, obesity, levothyroxine, weight
I started this medication last fall for an underactive thyroid. Since then I've been packing on the pounds even while watching every bite I take and excercising regularly. Answer this question
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SU
suzanne66 29 Mar 2010
You should report unusual weight gain to your doctor. See https://www.drugs.com/sfx/levothyroxine-side-effects.html
You may find some of these comments from users of levothyroxine interesting. https://www.drugs.com/comments/levothyroxine/
Votes: +0
JA
jaroslaw666 24 Jul 2011
Suzanne's first comment is right on. Weight gain is not a normal side effect of taking levo and too much of it could cause weight loss, the opposite of what you report. Your doc should get involved.

Has anyone experienced major weight gain after starting Levothyroxine? Q & A
Questions
Has anyone experienced major...
Has anyone experienced major weight gain after starting Levothyroxine? Asked
18 Mar 2010 by yorkgreeneyes
Updated
5 September 2019
Topics
underactive thyroid, thyroid disease, obesity, levothyroxine, weight
I started this medication last fall for an underactive thyroid. Since then I've been packing on the pounds even while watching every bite I take and excercising regularly. Answer this question
Answers (43)
Sort by
Oldest Newest Highest Rating Lowest Rating
SU
suzanne66 29 Mar 2010
You should report unusual weight gain to your doctor. See https://www.drugs.com/sfx/levothyroxine-side-effects.html
You may find some of these comments from users of levothyroxine interesting. https://www.drugs.com/comments/levothyroxine/
Votes: +0
JA
jaroslaw666 24 Jul 2011
Suzanne's first comment is right on. Weight gain is not a normal side effect of taking levo and too much of it could cause weight loss, the opposite of what you report. Your doc should get involved.

Levothyroxine.Does this cause weight gain? Levothyroxine.Does this cause weight gain?
Levothyroxine.Does this cause weight gain?
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Further Information
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Has anyone experienced major weight gain after starting Levothyroxine?
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions
 Levothyroxine. Does this cause weight gain? Q & A
Questions
Levothyroxine. Does this cause...
Levothyroxine. Does this cause weight gain? Asked
24 Feb 2012 by Anonymous
Updated
1 April 2019
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underactive thyroid, obesity, levothyroxine
I am on 125mgs a day. Is this alot? Also I dont overeat but gaining alot of weight. ( Not pregnant) Has anyone else got this problem? Answer this question
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MA
Marvell 28 Feb 2012
I guess it can cause weight gain ... it is known to cause an increase in appetite. (

Levothyroxine. Does this cause weight gain? Q & A
Questions
Levothyroxine. Does this cause...
Levothyroxine. Does this cause weight gain? Asked
24 Feb 2012 by Anonymous
Updated
1 April 2019
Topics
underactive thyroid, obesity, levothyroxine
I am on 125mgs a day. Is this alot? Also I dont overeat but gaining alot of weight. ( Not pregnant) Has anyone else got this problem? Answer this question
Answers (3)
MA
Marvell 28 Feb 2012
I guess it can cause weight gain ... it is known to cause an increase in appetite. (

Why Levothyroxine Causes Weight Gain and How to Prevent it Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs
 Most Doctors will prescribe T4 medication under the assumption that your body will have no problem converting T4 into T3. And in a perfect world, a world without stress, inflammation or other hormonal imbalances - it would. But that's not the world we live in...
Nowadays it's VERY uncommon if someone has their stress managed, has no issues with blood sugar/insulin/leptin, has a normal menstrual cycle, is not overweight, has never done yo-yo diets, or has normal adrenal function. Do any of these symptoms or situations sound familiar? Chances are high that you are dealing with 1 or more of them. And in states such as these, your body will turn T4 into reverse T3 as a way to "put on the brakes" and slow down your metabolism and cause symptoms of hypothyroidism. How Levothyroxine Causes weight gain
So how does this all relate to Levothyroxine and weight gain? We can look at some studies to help us understand: Take for instance this study. ( 1)
Patients in this study were given T4 only medications and treated based on their TSH.

Most Doctors will prescribe T4 medication under the assumption that your body will have no problem converting T4 into T3. And in a perfect world, a world without stress, inflammation or other hormonal imbalances - it would. But that's not the world we live in...
Nowadays it's VERY uncommon if someone has their stress managed, has no issues with blood sugar/insulin/leptin, has a normal menstrual cycle, is not overweight, has never done yo-yo diets, or has normal adrenal function. Do any of these symptoms or situations sound familiar? Chances are high that you are dealing with 1 or more of them. And in states such as these, your body will turn T4 into reverse T3 as a way to "put on the brakes" and slow down your metabolism and cause symptoms of hypothyroidism. How Levothyroxine Causes weight gain
So how does this all relate to Levothyroxine and weight gain? We can look at some studies to help us understand: Take for instance this study. ( 1)
Patients in this study were given T4 only medications and treated based on their TSH.

Synthroid and Weight Loss - Thyroid Advisor Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References
 Scientists were surprised to discover that only a few studies looked into the relationship between levothyroxine medication and weight loss in the hypothyroid patient. This is, indeed, surprising if we bear in mind that overweight/obesity are common in hypothyroidism. One would expect more studies to be conducted on this subject. Modest weight loss or lack of it in hypothyroid patients who receive treatment with levothyroxine isn’t only due to the drug itself. The outcome depends on the severity of hypothyroidism, treatment adequacy, and a subsequent calorie intake of an individual [7]. The Synthroid dose can depend from one patient to another and it is important to establish the right dosage. At the same time, your lifestyle matters too and whether you eat a well-balanced diet or not. Remember, making healthier lifestyle choices isn’t only about weight management in hypothyroidism, but prevention of complications such as high cholesterol and potential cardiovascular events. It is also important to mention that weight gain or weight loss is among a number of potential side effects of Synthroid use [8]. Of course, different people have different experiences and just because someone else may have gained weight due to the medication it doesn’t mean you will too.

Scientists were surprised to discover that only a few studies looked into the relationship between levothyroxine medication and weight loss in the hypothyroid patient. This is, indeed, surprising if we bear in mind that overweight/obesity are common in hypothyroidism. One would expect more studies to be conducted on this subject. Modest weight loss or lack of it in hypothyroid patients who receive treatment with levothyroxine isn’t only due to the drug itself. The outcome depends on the severity of hypothyroidism, treatment adequacy, and a subsequent calorie intake of an individual [7]. The Synthroid dose can depend from one patient to another and it is important to establish the right dosage. At the same time, your lifestyle matters too and whether you eat a well-balanced diet or not. Remember, making healthier lifestyle choices isn’t only about weight management in hypothyroidism, but prevention of complications such as high cholesterol and potential cardiovascular events. It is also important to mention that weight gain or weight loss is among a number of potential side effects of Synthroid use [8]. Of course, different people have different experiences and just because someone else may have gained weight due to the medication it doesn’t mean you will too.

Levothyroxine Sodium Common Drug Side Effects Levothyroxine
Levothyroxine
Most Commonly Used
Also See:
Take Action:
Common Side Effects of Levothyroxine Sodium
 Your doctor may want to make adjustments to your diabetes medicines and ask that you monitor your blood sugar levels closely. Levothyroxine can sometimes cause interactions with other medicines. These include over-the-counter medicines, such as antacids. Tell your doctor about any medicine you take, including over-the-counter medicines, herbal supplements, vitamins, and other supplements. Your doctor will want to know about any medicine that you take. Levothyroxine can some side effects. If any side effect of levothyroxine is severe, is worrying you, or does not go away, let your doctor know right away. Some side effects when taking levothyroxine include: Fatigue
Changes in appetite, weight loss, or weight gain
Tremor or shakiness
Headache
Nausea or vomiting
Diarrhea, vomiting, or stomach cramps
Nervousness or irritability
Trouble sleeping
Excessive sweating
Fever
Changes in menstrual cycle
Sensitivity to heat
Temporary hair loss
This is not a complete list of side effects of levothyroxine. Talk with your doctor about these or any side effects you notice while taking levothyroxine.

Levothyroxine Sodium Common Drug Side Effects

Levothyroxine
Levothyroxine
Most Commonly Used
Also See:
Take Action:
Common Side Effects of Levothyroxine Sodium

Your doctor may want to make adjustments to your diabetes medicines and ask that you monitor your blood sugar levels closely. Levothyroxine can sometimes cause interactions with other medicines. These include over-the-counter medicines, such as antacids. Tell your doctor about any medicine you take, including over-the-counter medicines, herbal supplements, vitamins, and other supplements. Your doctor will want to know about any medicine that you take. Levothyroxine can some side effects. If any side effect of levothyroxine is severe, is worrying you, or does not go away, let your doctor know right away. Some side effects when taking levothyroxine include: Fatigue
Changes in appetite, weight loss, or weight gain
Tremor or shakiness
Headache
Nausea or vomiting
Diarrhea, vomiting, or stomach cramps
Nervousness or irritability
Trouble sleeping
Excessive sweating
Fever
Changes in menstrual cycle
Sensitivity to heat
Temporary hair loss
This is not a complete list of side effects of levothyroxine. Talk with your doctor about these or any side effects you notice while taking levothyroxine.

Levothyroxine: MedlinePlus Drug Information Levothyroxine
Levothyroxine
IMPORTANT WARNING:
Why is this medication prescribed?
How should this medicine be used?
Other uses for this medicine
What special precautions should I follow?
Before taking levothyroxine,
What special dietary instructions should I follow?
What should I do if I forget a dose?
What side effects can this medication cause?
Levothyroxine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Some side effects can be serious. If you experience either of the following symptoms or those listed in the IMPORTANT WARNING section, call your doctor immediately or get emergency medical treatment:
What should I know about storage and disposal of this medication?
In case of emergency/overdose
Symptoms of overdose may include the following:
What other information should I know?
Brand names
 What should I do if I forget a dose? What side effects can this medication cause? What should I know about storage and disposal of this medication? In case of emergency/overdose
What other information should I know? Brand names
IMPORTANT WARNING: Expand Section
Levothyroxine (a thyroid hormone) should not be used alone or along with other treatments to treat obesity or cause weight loss. Levothyroxine may cause serious or life-threatening problems when given in large doses, especially when taken with amphetamines such as amphetamine (Adzenys, Dyanavel XR, Evekeo), dextroamphetamine (Dexedrine), and methamphetamine (Desoxyn). Tell your doctor if you have any of the following symptoms while you are taking levothyroxine: chest pain, rapid or irregular heartbeat or pulse, uncontrollable shaking of a part of the body, nervousness, anxiety, irritability, difficulty falling asleep or staying asleep, shortness of breath, or excessive sweating. Talk to your doctor about the potential risks associated with this medication.

Levothyroxine: MedlinePlus Drug Information

Levothyroxine
Levothyroxine
IMPORTANT WARNING:
Why is this medication prescribed?
How should this medicine be used?
Other uses for this medicine
What special precautions should I follow?
Before taking levothyroxine,
What special dietary instructions should I follow?
What should I do if I forget a dose?
What side effects can this medication cause?
Levothyroxine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Some side effects can be serious. If you experience either of the following symptoms or those listed in the IMPORTANT WARNING section, call your doctor immediately or get emergency medical treatment:
What should I know about storage and disposal of this medication?
In case of emergency/overdose
Symptoms of overdose may include the following:
What other information should I know?
Brand names

What should I do if I forget a dose? What side effects can this medication cause? What should I know about storage and disposal of this medication? In case of emergency/overdose
What other information should I know? Brand names
IMPORTANT WARNING: Expand Section
Levothyroxine (a thyroid hormone) should not be used alone or along with other treatments to treat obesity or cause weight loss. Levothyroxine may cause serious or life-threatening problems when given in large doses, especially when taken with amphetamines such as amphetamine (Adzenys, Dyanavel XR, Evekeo), dextroamphetamine (Dexedrine), and methamphetamine (Desoxyn). Tell your doctor if you have any of the following symptoms while you are taking levothyroxine: chest pain, rapid or irregular heartbeat or pulse, uncontrollable shaking of a part of the body, nervousness, anxiety, irritability, difficulty falling asleep or staying asleep, shortness of breath, or excessive sweating. Talk to your doctor about the potential risks associated with this medication.

Why Levothyroxine Causes Weight Gain and How to Prevent it Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs
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Are you on Levothyroxine but still gaining weight? Believe it or not, this is a big problem for a lot of people. But the bigger question is this: How can you be gaining weight on a medication that is supposed to INCREASE your metabolism? Is it even possible? Well, the truth is that Levothyroxine doesn't necessarily increase your metabolism ... at least not in everyone. In this post I'm going to show you exactly why Levothyroxine can cause weight gain and what you can do about it: More...
T4 to T3 Conversion Matters... A lot
Before we talk about how Levothyroxine and Synthroid can cause weight gain we need to talk about some basic thyroid physiology. Your thyroid, under the influence of TSH (if working properly), pumps out primarily the thyroid hormone T4. What you need to understand is that T4 is an inactive hormone.

Watch on
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Live
•
Are you on Levothyroxine but still gaining weight? Believe it or not, this is a big problem for a lot of people. But the bigger question is this: How can you be gaining weight on a medication that is supposed to INCREASE your metabolism? Is it even possible? Well, the truth is that Levothyroxine doesn't necessarily increase your metabolism ... at least not in everyone. In this post I'm going to show you exactly why Levothyroxine can cause weight gain and what you can do about it: More...
T4 to T3 Conversion Matters... A lot
Before we talk about how Levothyroxine and Synthroid can cause weight gain we need to talk about some basic thyroid physiology. Your thyroid, under the influence of TSH (if working properly), pumps out primarily the thyroid hormone T4. What you need to understand is that T4 is an inactive hormone.

Synthroid for Weight Loss | Healthy Living
Identification
Effects
Weight Loss
Warnings
Overdose
Dangers
 Synthroid for Weight Loss | Healthy Living
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Synthroid is a synthetic version of a naturally occurring thyroid hormone. It is used medically to treat hypothyroidism and users have taken it to manage obesity or lose weight in bodybuilding. Patients with certain pre-existing conditions should not take Synthroid as its use can lead to a number of detrimental side effects, including overdose and death. Identification
Synthroid (levothyroxine sodium) is a pharmaceutically produced synthetic version of the naturally occurring thyroid hormone thyroxine. According to the pharmaceutical information website drugs.com, Synthroid use is indicated for patients of all ages (including children and infants) with low natural levels of thyroid hormone (hypothyroidism) caused by thyroid malfunction or atrophy, injury or damage to the pituitary gland or hypothalamus, surgery, radiation or the effects of other drugs. Synthroid can also be used to treat patients suffering from thyroid cancer, those who have had their thyroid surgically removed or patients with a goiter (swelling of the thyroid). Effects
In healthy patients, thyroxine acts to stimulate and regulate the metabolism of fats, carbohydrates and vitamins.

Synthroid for Weight Loss | Healthy Living

Identification
Effects
Weight Loss
Warnings
Overdose
Dangers

Synthroid for Weight Loss | Healthy Living
Related Articles
What Are the Benefits of Using Proviron? Why Am I Gaining Weight on Armour Thyroid? The Best Thyroid Medication for Weight Loss
Why Does Nortriptyline Make You Gain Weight? Symptoms of Too Much Estrogen
Tramacet for Pain
Share on Facebook
Synthroid is a synthetic version of a naturally occurring thyroid hormone. It is used medically to treat hypothyroidism and users have taken it to manage obesity or lose weight in bodybuilding. Patients with certain pre-existing conditions should not take Synthroid as its use can lead to a number of detrimental side effects, including overdose and death. Identification
Synthroid (levothyroxine sodium) is a pharmaceutically produced synthetic version of the naturally occurring thyroid hormone thyroxine. According to the pharmaceutical information website drugs.com, Synthroid use is indicated for patients of all ages (including children and infants) with low natural levels of thyroid hormone (hypothyroidism) caused by thyroid malfunction or atrophy, injury or damage to the pituitary gland or hypothalamus, surgery, radiation or the effects of other drugs. Synthroid can also be used to treat patients suffering from thyroid cancer, those who have had their thyroid surgically removed or patients with a goiter (swelling of the thyroid). Effects
In healthy patients, thyroxine acts to stimulate and regulate the metabolism of fats, carbohydrates and vitamins.

Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
evothyroxine and you are wondering about side effects
Understanding The Side Effects of Levothyroxine & What Causes Them
contains the active ingredient Thyroxine
Hypothyroidism is a hormone imbalance
Medications like birth-control pills contain altered hormone equivalents
exact same as the hormone that your body produces
'natural' thyroid hormones such as NDT
You are reacting to fillers, dyes, preservatives or other inactive components of the medicatio
You are taking the right medication but your dose is not sufficient
You are taking the right medication but your dose is too high
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Understanding Inactive Ingredients
Some of these dyes (especially Red 40, Yellow 5, and Yellow 6) may cause hypersensitivity reactions and health problems in certain people
different type of T4 medication like Tirosint
Many patients react poorly to these fillers and dyes
Is Your Dose of Levothyroxine Right for Your Body?
especially those with specific genetic defects in the DIO2 gene
sometimes referred to as LT3 or triiodothyronine
"normal thyroid lab tests".
seek out combination thyroid medication
monitoring your lab tests
Your energy levels should be improving
Your weight should be dropping
Your hair, skin, and nails should be improving
Your mood should be improving
Your menstrual cycle should be more regular
Your joint pain or muscle soreness should be reduced
You should NOT be having constipation
Is Levothyroxine Causing me to Gain Weight?
given what we know about thyroid physiology
converted from the inactive T4 into the active T3
I have written about this phenomenon in this post and you can read more here if you want more information
You can also track your total T3 and free T3 levels as these levels tend to correlate well with your potential for weight loss
find a doctor willing to prescribe Natural Desiccated thyroid or Liothyronine
Is Levothyroxine Making my Hair Fall out?
all of the potential causes of hair loss in thyroid patients in this post
If you had hair loss PRIOR to taking levothyroxine and it was made WORSE by the medication then you may be experiencing a negative side effect
Negative Side Effects of Levothyroxine to Watch Out for:
Jittery sensation or nervous feeling
Insomnia or inability to fall asleep
Tremors or shaking/trembling of the hands
Worsening hair loss or hair thinning
Complete list of side effects of Levothyroxine:
More common and less serious side effects:
Do you need to Switch Medications?
switching to a T4 medication like Tirosint may dramatically help
use these tips to try and help you find a knowledgeable doctor
Conclusion
References (Click to Expand)
About Dr. Westin Childs
 As I mentioned previously if your dose is sufficient for your body then you should not be experiencing negative symptoms. And it's important to differentiate between the symptoms of the disease that you are treating (hypothyroidism) and the potential side effects of the medication. Hypothyroidism results in specific symptoms such as fatigue, weight gain, hair loss, pain, menstrual irregularities, constipation, cold intolerance and so on. As you take levothyroxine, these symptoms should subside. If, however, you notice a slight improvement (but not a complete resolution) then that may be an indication that your dosing is off. If you notice completely new symptoms then that may be an indication that your symptoms are caused directly by the medication itself. But, back to your dose for a second. It's important to realize that levothyroxine may not work for up to 15% of the population. Certain patients, especially those with specific genetic defects in the DIO2 gene (5), may need a combination of T4 and T3. T3, sometimes referred to as LT3 or triiodothyronine, is the active thyroid hormone.

Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More

As I mentioned previously if your dose is sufficient for your body then you should not be experiencing negative symptoms. And it's important to differentiate between the symptoms of the disease that you are treating (hypothyroidism) and the potential side effects of the medication. Hypothyroidism results in specific symptoms such as fatigue, weight gain, hair loss, pain, menstrual irregularities, constipation, cold intolerance and so on. As you take levothyroxine, these symptoms should subside. If, however, you notice a slight improvement (but not a complete resolution) then that may be an indication that your dosing is off. If you notice completely new symptoms then that may be an indication that your symptoms are caused directly by the medication itself. But, back to your dose for a second. It's important to realize that levothyroxine may not work for up to 15% of the population. Certain patients, especially those with specific genetic defects in the DIO2 gene (5), may need a combination of T4 and T3. T3, sometimes referred to as LT3 or triiodothyronine, is the active thyroid hormone.

Synthroid and Weight Loss - Thyroid Advisor Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References
 In instances when TSH activity is too high, it usually means a patient deals with hypothyroidism. The American Thyroid Association explains weight gain is more serious in patients with more severe hypothyroidism, compared to their counterparts. Even though the relationship between hypothyroidism and weight gain is evident, the underlying mechanisms aren’t quite clear. In a vast majority of patients, most of the extra weight is due to accumulation of water and salt. Massive weight gain is not usually associated with hypothyroidism itself and only 5-10 pounds of body weight can be attributed to effects of the thyroid gland. Of course, it all depends on the severity of hypothyroidism [5], the American Thyroid Association adds. Synthroid and weight loss
Synthroid, levothyroxine, is a synthetic version of hormone thyroxine (T4) produced by the thyroid gland. In hypothyroid patients, the thyroid gland produces an insufficient amount of this hormone (and T3) or doesn’t produce anything at all ( see this article for more information on thyroid basics and common questions.) The medication works to replace this naturally-produced hormone and ensure the body has sufficient levels of T4 to regulate metabolism, energy, and to prevent goiter. The T4 requirements of an individual can change due to weight loss.

In instances when TSH activity is too high, it usually means a patient deals with hypothyroidism. The American Thyroid Association explains weight gain is more serious in patients with more severe hypothyroidism, compared to their counterparts. Even though the relationship between hypothyroidism and weight gain is evident, the underlying mechanisms aren’t quite clear. In a vast majority of patients, most of the extra weight is due to accumulation of water and salt. Massive weight gain is not usually associated with hypothyroidism itself and only 5-10 pounds of body weight can be attributed to effects of the thyroid gland. Of course, it all depends on the severity of hypothyroidism [5], the American Thyroid Association adds. Synthroid and weight loss
Synthroid, levothyroxine, is a synthetic version of hormone thyroxine (T4) produced by the thyroid gland. In hypothyroid patients, the thyroid gland produces an insufficient amount of this hormone (and T3) or doesn’t produce anything at all ( see this article for more information on thyroid basics and common questions.) The medication works to replace this naturally-produced hormone and ensure the body has sufficient levels of T4 to regulate metabolism, energy, and to prevent goiter. The T4 requirements of an individual can change due to weight loss.

levothyroxine losing weight - MedHelp Levothyroxine losing weight
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid
 Read More
s I have not gained any weight through my illness and I worry that the higher the dose of Levothyroxine the more weight I may lose. * I stopped it for a brief period a few weeks ago and my TSH went down to 2.7 from 4.6 (0.27-4.2) on its own. So the thyroid must still be working, surely?|  * I lost the outer third of my eyebrows after taking them. * I don't feel any better on the dose I am on. Read More
Dear Sir  I used to be a very big man (about 130kgr) and was therefore on a high dosage of levothyroxine (200mcg). Within the last few months (nine) I have lost a significant amount of weight. I have noticed my hair becoming a bit thinner and possibly a small amount of hair loss (minor). The main change however is the texture of the hair. As I am not a resident this year in the country where my thyroid tests took place I havent been for a check, although I plan to do so soon, (christmas). Read More
Hi,I've been taking Levothyroxine Na (Euthyrox ) for many years, i'm afraid that the decreasing hemoglobin and gaining weight DESPITE of my diet control are the side-effects of prolong intake of this medicines.

levothyroxine losing weight - MedHelp

Levothyroxine losing weight
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid

Read More
s I have not gained any weight through my illness and I worry that the higher the dose of Levothyroxine the more weight I may lose. * I stopped it for a brief period a few weeks ago and my TSH went down to 2.7 from 4.6 (0.27-4.2) on its own. So the thyroid must still be working, surely?|  * I lost the outer third of my eyebrows after taking them. * I don't feel any better on the dose I am on. Read More
Dear Sir  I used to be a very big man (about 130kgr) and was therefore on a high dosage of levothyroxine (200mcg). Within the last few months (nine) I have lost a significant amount of weight. I have noticed my hair becoming a bit thinner and possibly a small amount of hair loss (minor). The main change however is the texture of the hair. As I am not a resident this year in the country where my thyroid tests took place I havent been for a check, although I plan to do so soon, (christmas). Read More
Hi,I've been taking Levothyroxine Na (Euthyrox ) for many years, i'm afraid that the decreasing hemoglobin and gaining weight DESPITE of my diet control are the side-effects of prolong intake of this medicines.

Levothyroxine Injection Advanced Patient Information - Drugs.com Levothyroxine (Injection)
Levothyroxine (Injection)
Commonly used brand name (s)
Uses for levothyroxine
Before using levothyroxine
Allergies
Pediatric
Geriatric
Breastfeeding
Interactions with medicines
Interactions with food/tobacco/alcohol
Other medical problems
Proper use of levothyroxine
Dosing
Detailed Levothyroxine dosage information
Precautions while using levothyroxine
Levothyroxine side effects
Levothyroxine side effects (more detail)
Frequently asked questions
More about levothyroxine
Consumer resources
Other brands
Professional resources
Related treatment guides
Further information
 Levothyroxine may cause new or worsening heart failure. Check with your doctor right away if you have more than one of these symptoms: chest pain, decreased urine output, dilated neck veins, extreme fatigue, irregular breathing, irregular heartbeat, swelling of the face, fingers, feet, or lower legs, tightness in the chest, trouble breathing, or weight gain. Levothyroxine should not be used for the treatment of obesity or for the purpose of losing weight. Levothyroxine is ineffective for weight reduction and when taken in larger amounts may cause more serious medical conditions. Make sure any doctor or dentist who treats you knows that you are using levothyroxine. Levothyroxine may affect the results of certain medical tests. Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements. Levothyroxine side effects
Along with its needed effects, a medicine may cause some unwanted effects.

Levothyroxine Injection Advanced Patient Information - Drugs.com

Levothyroxine (Injection)
Levothyroxine (Injection)
Commonly used brand name (s)
Uses for levothyroxine
Before using levothyroxine
Allergies
Pediatric
Geriatric
Breastfeeding
Interactions with medicines
Interactions with food/tobacco/alcohol
Other medical problems
Proper use of levothyroxine
Dosing
Detailed Levothyroxine dosage information
Precautions while using levothyroxine
Levothyroxine side effects
Levothyroxine side effects (more detail)
Frequently asked questions
More about levothyroxine
Consumer resources
Other brands
Professional resources
Related treatment guides
Further information

Levothyroxine may cause new or worsening heart failure. Check with your doctor right away if you have more than one of these symptoms: chest pain, decreased urine output, dilated neck veins, extreme fatigue, irregular breathing, irregular heartbeat, swelling of the face, fingers, feet, or lower legs, tightness in the chest, trouble breathing, or weight gain. Levothyroxine should not be used for the treatment of obesity or for the purpose of losing weight. Levothyroxine is ineffective for weight reduction and when taken in larger amounts may cause more serious medical conditions. Make sure any doctor or dentist who treats you knows that you are using levothyroxine. Levothyroxine may affect the results of certain medical tests. Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements. Levothyroxine side effects
Along with its needed effects, a medicine may cause some unwanted effects.

Why Synthroid isn’t Causing Weight Loss and How to Fix it Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs
 Because even if you have hypothyroidism it's NOT likely to cause significant weight loss by itself (6), except for certain circumstances. Studies have shown that even taking suppressive doses of LT4 (levothyroxine) to lower the TSH does NOT result in weight loss. But this study did show that lowering the TSH did slightly increase the basal metabolic rate of women, but not enough to normalize free T3 levels. How Long Before Synthroid Helps with Weight Loss? So why is it that some people are able to lose weight on Synthroid while other patients don't lose any weight and some very unlucky patients actually gain weight on it? The answer generally has to do with thyro

Because even if you have hypothyroidism it's NOT likely to cause significant weight loss by itself (6), except for certain circumstances. Studies have shown that even taking suppressive doses of LT4 (levothyroxine) to lower the TSH does NOT result in weight loss. But this study did show that lowering the TSH did slightly increase the basal metabolic rate of women, but not enough to normalize free T3 levels. How Long Before Synthroid Helps with Weight Loss? So why is it that some people are able to lose weight on Synthroid while other patients don't lose any weight and some very unlucky patients actually gain weight on it? The answer generally has to do with thyro

levothyroxine losing weight - MedHelp Levothyroxine losing weight
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid
 Within the last few months (nine) I have lost a significant amount of weight. I have noticed my hair becoming a bit thinner and possibly a small amount of hair loss (minor). The main change however is the texture of the hair. As I am not a resident this year in the country where my thyroid tests took place I havent been for a check, although I plan to do so soon, (christmas). Read More
Hi,I've been taking Levothyroxine Na (Euthyrox ) for many years, i'm afraid that the decreasing hemoglobin and gaining weight DESPITE of my diet control are the side-effects of prolong intake of this medicines. Do i need to refer it with my Endocrinologist? so that she will change my medicines? , because according to her its a life-time intake of medicines...please advise!! Read More
My doctor back then did warn me and tell me that a big side effect of not taking Levothyroxine would be weight gain. Ever since I stopped taking Levothyroxine, I have not suffered or noticed any side effects other than the major weight gain.

levothyroxine losing weight - MedHelp

Within the last few months (nine) I have lost a significant amount of weight. I have noticed my hair becoming a bit thinner and possibly a small amount of hair loss (minor). The main change however is the texture of the hair. As I am not a resident this year in the country where my thyroid tests took place I havent been for a check, although I plan to do so soon, (christmas). Read More
Hi,I've been taking Levothyroxine Na (Euthyrox ) for many years, i'm afraid that the decreasing hemoglobin and gaining weight DESPITE of my diet control are the side-effects of prolong intake of this medicines. Do i need to refer it with my Endocrinologist? so that she will change my medicines? , because according to her its a life-time intake of medicines...please advise!! Read More
My doctor back then did warn me and tell me that a big side effect of not taking Levothyroxine would be weight gain. Ever since I stopped taking Levothyroxine, I have not suffered or noticed any side effects other than the major weight gain.

Levothyroxine: MedlinePlus Drug Information Levothyroxine
Levothyroxine
IMPORTANT WARNING:
Why is this medication prescribed?
How should this medicine be used?
Other uses for this medicine
What special precautions should I follow?
Before taking levothyroxine,
What special dietary instructions should I follow?
What should I do if I forget a dose?
What side effects can this medication cause?
Levothyroxine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Some side effects can be serious. If you experience either of the following symptoms or those listed in the IMPORTANT WARNING section, call your doctor immediately or get emergency medical treatment:
What should I know about storage and disposal of this medication?
In case of emergency/overdose
Symptoms of overdose may include the following:
What other information should I know?
Brand names
 Expand Section
Levothyroxine (a thyroid hormone) should not be used alone or along with other treatments to treat obesity or cause weight loss. Levothyroxine may cause serious or life-threatening problems when given in large doses, especially when taken with amphetamines such as amphetamine (Adzenys, Dyanavel XR, Evekeo), dextroamphetamine (Dexedrine), and methamphetamine (Desoxyn). Tell your doctor if you have any of the following symptoms while you are taking levothyroxine: chest pain, rapid or irregular heartbeat or pulse, uncontrollable shaking of a part of the body, nervousness, anxiety, irritability, difficulty falling asleep or staying asleep, shortness of breath, or excessive sweating. Talk to your doctor about the potential risks associated with this medication. Why is this medication prescribed? Expand Section
Levothyroxine is used to treat hypothyroidism (condition where the thyroid gland does not produce enough thyroid hormone). It is also used with surgery and radioactive iodine therapy to treat thyroid cancer. Levothyroxine is in a class of medications called hormones. It works by replacing thyroid hormone that is normally produced by the body.

Expand Section
Levothyroxine (a thyroid hormone) should not be used alone or along with other treatments to treat obesity or cause weight loss. Levothyroxine may cause serious or life-threatening problems when given in large doses, especially when taken with amphetamines such as amphetamine (Adzenys, Dyanavel XR, Evekeo), dextroamphetamine (Dexedrine), and methamphetamine (Desoxyn). Tell your doctor if you have any of the following symptoms while you are taking levothyroxine: chest pain, rapid or irregular heartbeat or pulse, uncontrollable shaking of a part of the body, nervousness, anxiety, irritability, difficulty falling asleep or staying asleep, shortness of breath, or excessive sweating. Talk to your doctor about the potential risks associated with this medication. Why is this medication prescribed? Expand Section
Levothyroxine is used to treat hypothyroidism (condition where the thyroid gland does not produce enough thyroid hormone). It is also used with surgery and radioactive iodine therapy to treat thyroid cancer. Levothyroxine is in a class of medications called hormones. It works by replacing thyroid hormone that is normally produced by the body.

Side Effects and Precautions of Levothyroxine | MD-Health.com Side Effects and Precautions of Levothyroxine
Side Effects and Precautions of Levothyroxine
Levothyroxine is used to treat a sluggish thyroid or hypothyroidism. While it is generally well-accepted by the body, there is a risk for developing side effects.
Side Effects of Levothyroxine
1. Allergic Reactions
2. Cardiovascular Effects
3. Endocrine Problems
4. Nervous System Effects
5. Dermatologic Problems
6. Musculoskeletal Effects
Precautions of Using Levothyroxine
 Levothyroxine is intended to be used alongside other forms of treatment including diet and exercise to maintain the healthiest levels of thyroid function possible. This medication cannot be used to promote weight loss or infertility unless these issues are stemming directly from poor thyroid function. Taking levothyroxine alongside diet pills can cause dangerous and potentially deadly side effects. Side Effects of Levothyroxine
In general, levothyroxine is well tolerated in patients. Most side effects stem from overusing the drug or using it incorrectly. Follow all instructions from your doctor when using levothyroxine and ask questions about anything you do not understand. Common levothyroxine side effects include heat intolerance, anxiety, increased appetite, weight loss, insomnia, diarrhea, palpitations, tachycardia, hypertension, angina, increased bowel frequency and menstrual irregularities. These side effects typically appear several weeks after starting your medication. 1. Allergic Reactions
In the event that a patient is allergic to one or more ingredients in levothyroxine, an allergic reaction may occur.

Side Effects and Precautions of Levothyroxine | MD-Health.com

Side Effects and Precautions of Levothyroxine
Side Effects and Precautions of Levothyroxine
Levothyroxine is used to treat a sluggish thyroid or hypothyroidism. While it is generally well-accepted by the body, there is a risk for developing side effects.
Side Effects of Levothyroxine
1. Allergic Reactions
2. Cardiovascular Effects
3. Endocrine Problems
4. Nervous System Effects
5. Dermatologic Problems
6. Musculoskeletal Effects
Precautions of Using Levothyroxine

Levothyroxine is intended to be used alongside other forms of treatment including diet and exercise to maintain the healthiest levels of thyroid function possible. This medication cannot be used to promote weight loss or infertility unless these issues are stemming directly from poor thyroid function. Taking levothyroxine alongside diet pills can cause dangerous and potentially deadly side effects. Side Effects of Levothyroxine
In general, levothyroxine is well tolerated in patients. Most side effects stem from overusing the drug or using it incorrectly. Follow all instructions from your doctor when using levothyroxine and ask questions about anything you do not understand. Common levothyroxine side effects include heat intolerance, anxiety, increased appetite, weight loss, insomnia, diarrhea, palpitations, tachycardia, hypertension, angina, increased bowel frequency and menstrual irregularities. These side effects typically appear several weeks after starting your medication. 1. Allergic Reactions
In the event that a patient is allergic to one or more ingredients in levothyroxine, an allergic reaction may occur.

Has anyone experienced major weight gain after starting Levothyroxine? Has anyone experienced major weight gain after starting Levothyroxine?
Has anyone experienced major weight gain after starting Levothyroxine?
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My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
Levothyroxine.Does this cause weight gain?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions
 Sometimes the issue is conversion. You may be converting the T4 to reverse T3 and this Reverse T3 is docking in the T3 receptor sites and disabling them form being activated by actual T3. Ask your doctor to check a RT3 and if its >10%, decrease the T4 and add T3 . you may want to do a 2 week washout period from the levo ( refrain from taking it altogether) to lower your RT3 and T4
OC
Oceanlady 14 Sep 2018
If you're a health care professional and you haven't heard that Synthroid or Levothyroxine will cause weight gain, you're completely out of touch. I was 50 yrs old when diagnosed, had already had three children and had only weighed 107 9 mos. pregnant. Absolutely nothing made me gain weight. I weighed 98 at age 50 and within five mos., I had gained 17 lbs. This is a very common complaint, and nobody seems to be able to explain it or care.

Sometimes the issue is conversion. You may be converting the T4 to reverse T3 and this Reverse T3 is docking in the T3 receptor sites and disabling them form being activated by actual T3. Ask your doctor to check a RT3 and if its >10%, decrease the T4 and add T3 . you may want to do a 2 week washout period from the levo ( refrain from taking it altogether) to lower your RT3 and T4
OC
Oceanlady 14 Sep 2018
If you're a health care professional and you haven't heard that Synthroid or Levothyroxine will cause weight gain, you're completely out of touch. I was 50 yrs old when diagnosed, had already had three children and had only weighed 107 9 mos. pregnant. Absolutely nothing made me gain weight. I weighed 98 at age 50 and within five mos., I had gained 17 lbs. This is a very common complaint, and nobody seems to be able to explain it or care.

Why Levothyroxine Causes Weight Gain and How to Prevent it Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
T4 to T3 Conversion Matters... A lot
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Levothyroxine and Synthroid are Both T4 only Medications
How Levothyroxine Causes weight gain
What to do if you think Levothyroxine is Causing Weight Gain
Step #1: Check your Basal Body Temperature Each Morning
Step #2: Check your Resting Pulse or Resting Heart Rate
Step #3: Check a Complete Thyroid Panel
How to Finally Lose Weight with Hypothyroidism
Does Levothyroxine ever Cause Weight Loss?
5 Steps YOU can Take Today to Lose Weight and Boost Thyroid Function
1. Optimize T4 to T3 Conversion
2. Optimize your Adrenal Function and Cortisol Levels
3. Add in High-Intensity Exercise
4. Reduce Inflammation
5. Balance Insulin and Leptin levels
Real Patients and Real Results
 More Resources and Links showing why T4 only medications don't work for everyone:
The Effects of Levothyroxine substitution on body composition . (17)
Differences in hypothalamic type 2 deiodinase ubiquitination explain localized sensitivity to thyroxine . (18)
References (Click to Expand)
About Dr. Westin Childs
 Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
July 20, 2020 April 3, 2016 by Dr. Westin Childs
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Levothyroxine and Weight gain (Why some people gain weight on levo and Synthroid)
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Are you on Levothyroxine but still gaining weight? Believe it or not, this is a big problem for a lot of people. But the bigger question is this: How can you be gaining weight on a medication that is supposed to INCREASE your metabolism? Is it even possible?

Why Levothyroxine Causes Weight Gain and How to Prevent it
Why Levothyroxine Causes Weight Gain and How to Prevent it
July 20, 2020 April 3, 2016 by Dr. Westin Childs
YouTube
Dr. Westin Childs
54.4K subscribers
Subscribe
Levothyroxine and Weight gain (Why some people gain weight on levo and Synthroid)
Watch later
Copy link
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Shopping
Tap to unmute
If playback doesn't begin shortly, try restarting your device. More videos
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0:00
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Are you on Levothyroxine but still gaining weight? Believe it or not, this is a big problem for a lot of people. But the bigger question is this: How can you be gaining weight on a medication that is supposed to INCREASE your metabolism? Is it even possible?

levothyroxine losing weight - MedHelp Levothyroxine losing weight
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid
 levothyroxine losing weight - MedHelp
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid
I recently went to the doctor for advise on losing weight as i was finding it hard to lose the stone i had gained. She suggest we check my thyroid which turned out to be underacting and put me on a daily dosage of levothyroxine 50mg. I have been now taking this for about 4 weeks and feel very tired and just seem to have no energy to focus on anything let alone tiring to lose weight. I also seem to be hungry all the time any suggestions ? Read More
i am on 125 mcg levothyroxine for seven years,today i started taking 5mcg of cytomel.will i start losing weight?how will i feel?with the synthroid i feel tired and it's very hard for me to lose weight.please help. Read More
Good morning  I have a thyroid problem I was diagnosed a month, since then I am taking levothyroxine 25mg. I'm losing hair with peeled about two months and my doctor says it is caused by the thyroid. But I have noticed that since I started taking this medicine suits me more hair and I'm gaining weight just in time quite sometimes feel very dizzy. I am aware that these side effects and normal in this type of treatment. Could you tell me if will always be so?

levothyroxine losing weight - MedHelp

levothyroxine losing weight - MedHelp
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid
I recently went to the doctor for advise on losing weight as i was finding it hard to lose the stone i had gained. She suggest we check my thyroid which turned out to be underacting and put me on a daily dosage of levothyroxine 50mg. I have been now taking this for about 4 weeks and feel very tired and just seem to have no energy to focus on anything let alone tiring to lose weight. I also seem to be hungry all the time any suggestions ? Read More
i am on 125 mcg levothyroxine for seven years,today i started taking 5mcg of cytomel.will i start losing weight?how will i feel?with the synthroid i feel tired and it's very hard for me to lose weight.please help. Read More
Good morning  I have a thyroid problem I was diagnosed a month, since then I am taking levothyroxine 25mg. I'm losing hair with peeled about two months and my doctor says it is caused by the thyroid. But I have noticed that since I started taking this medicine suits me more hair and I'm gaining weight just in time quite sometimes feel very dizzy. I am aware that these side effects and normal in this type of treatment. Could you tell me if will always be so?

Precautions and Warnings With Levothyroxine Precautions and Warnings With Levothyroxine
Precautions and Warnings With Levothyroxine
Levothyroxine: What Should I Tell My Healthcare Provider?
Specific Precautions and Warnings With Levothyroxine
 This means that for any given person, the range of levothyroxine doses that are both safe and effective is small. Even tiny changes in doses can cause significant problems (either making levothyroxine ineffective or causing serious side effects). Your healthcare provider should carefully and slowly adjust your dose, and should monitor your progress often using blood tests. Even if you have been stable on levothyroxine for years, your healthcare provider should still do these blood tests regularly. People who do not have thyroid problems should never use levothyroxine to lose weight. A levothyroxine dosage high enough to cause weight loss in these people is often high enough to cause serious or even life-threatening problems. Levothyroxine may increase the risk of osteoporosis, particularly if your levothyroxine dosage is too high. This is one of the reasons why it is a good idea for your healthcare provider to prescribe a dose of levothyroxine that is just enough to return your thyroid hormone levels to normal. Sometimes, thyroid problems occur in conjunction with other health problems (such as anemia or diabetes). It is a good idea for your healthcare provider to give you a thorough physical exam when you are diagnosed with a thyroid problem.

Precautions and Warnings With Levothyroxine

Precautions and Warnings With Levothyroxine
Precautions and Warnings With Levothyroxine
Levothyroxine: What Should I Tell My Healthcare Provider?
Specific Precautions and Warnings With Levothyroxine

This means that for any given person, the range of levothyroxine doses that are both safe and effective is small. Even tiny changes in doses can cause significant problems (either making levothyroxine ineffective or causing serious side effects). Your healthcare provider should carefully and slowly adjust your dose, and should monitor your progress often using blood tests. Even if you have been stable on levothyroxine for years, your healthcare provider should still do these blood tests regularly. People who do not have thyroid problems should never use levothyroxine to lose weight. A levothyroxine dosage high enough to cause weight loss in these people is often high enough to cause serious or even life-threatening problems. Levothyroxine may increase the risk of osteoporosis, particularly if your levothyroxine dosage is too high. This is one of the reasons why it is a good idea for your healthcare provider to prescribe a dose of levothyroxine that is just enough to return your thyroid hormone levels to normal. Sometimes, thyroid problems occur in conjunction with other health problems (such as anemia or diabetes). It is a good idea for your healthcare provider to give you a thorough physical exam when you are diagnosed with a thyroid problem.

Why Synthroid isn’t Causing Weight Loss and How to Fix it Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs
 Does getting on medication help at least a little bit? Yes, but not a lot. If you are going to lose weight after getting on Synthroid or levothyroxine it will only be about 5-15 pounds at most. That's because the thyroid usually only contributes that much to your total weight. If you are 50+ pounds overweight then 15 pounds may be from your thyroid, 30 may be from insulin resistance, 10 may be from estrogen levels or cortisol levels, etc. Weight gain and weight loss are much more complex than just eating less and exercising more and hoping that everything will "work itself out". The bottom line? If you are going to lose weight when you add Synthroid or levothyroxine it will only be a small amount IF the medication is right for you. What's more is that due to other mechanics in your body, the addition of T4 only medications like Synthroid and levothyroxine can actually lead to weight GAIN. It may not make sense now, but we are going to discuss below how that happens.

Does getting on medication help at least a little bit? Yes, but not a lot. If you are going to lose weight after getting on Synthroid or levothyroxine it will only be about 5-15 pounds at most. That's because the thyroid usually only contributes that much to your total weight. If you are 50+ pounds overweight then 15 pounds may be from your thyroid, 30 may be from insulin resistance, 10 may be from estrogen levels or cortisol levels, etc. Weight gain and weight loss are much more complex than just eating less and exercising more and hoping that everything will "work itself out". The bottom line? If you are going to lose weight when you add Synthroid or levothyroxine it will only be a small amount IF the medication is right for you. What's more is that due to other mechanics in your body, the addition of T4 only medications like Synthroid and levothyroxine can actually lead to weight GAIN. It may not make sense now, but we are going to discuss below how that happens.

Has anyone experienced major weight gain after starting Levothyroxine? Has anyone experienced major weight gain after starting Levothyroxine?
Has anyone experienced major weight gain after starting Levothyroxine?
Asked
Updated
Topics
Answer this question
Answers (43)
Answer this question Find similar questions
Further Information
Similar Questions
My doc tells me it is virtually impossible to gain weight on 88mg of Levothyroxine. I am A?
Levothyroxine.Does this cause weight gain?
I am a 28 year old female who was recently diagnosed with underactive thyroid. My tsh level was 9.75
Is levothyroxine really that bad?
Levothyroxine makes me gained weight?
Search for questions
 This manufacturer needs a class action law suit. This stuff need to be taken off the market and FDA INVESTIGATION. SW
swanee2009 9 Apr 2018
I stopped taking my thyroid meds and lost a few pounds. I’m not gonna take it anymore, I felt miserable with the weight o gained while taking it. AL
alex1105 1 Sep 2018
Hello,
Actually this is not as uncommon as you would imagine. Sometimes the issue is conversion. You may be converting the T4 to reverse T3 and this Reverse T3 is docking in the T3 receptor sites and disabling them form being activated by actual T3. Ask your doctor to check a RT3 and if its >10%, decrease the T4 and add T3 . you may want to do a 2 week washout period from the levo ( refrain from taking it altogether) to lower your RT3 and T4
OC
Oceanlady 14 Sep 2018
If you're a health care professional and you haven't heard that Synthroid or Levothyroxine will cause weight gain, you're completely out of touch. I was 50 yrs old when diagnosed, had already had three children and had only weighed 107 9 mos.

This manufacturer needs a class action law suit. This stuff need to be taken off the market and FDA INVESTIGATION. SW
swanee2009 9 Apr 2018
I stopped taking my thyroid meds and lost a few pounds. I’m not gonna take it anymore, I felt miserable with the weight o gained while taking it. AL
alex1105 1 Sep 2018
Hello,
Actually this is not as uncommon as you would imagine. Sometimes the issue is conversion. You may be converting the T4 to reverse T3 and this Reverse T3 is docking in the T3 receptor sites and disabling them form being activated by actual T3. Ask your doctor to check a RT3 and if its >10%, decrease the T4 and add T3 . you may want to do a 2 week washout period from the levo ( refrain from taking it altogether) to lower your RT3 and T4
OC
Oceanlady 14 Sep 2018
If you're a health care professional and you haven't heard that Synthroid or Levothyroxine will cause weight gain, you're completely out of touch. I was 50 yrs old when diagnosed, had already had three children and had only weighed 107 9 mos.

Why Synthroid isn’t Causing Weight Loss and How to Fix it Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs
 Beta blockers, antihypertensives, anti-seizure medications, diabetic medications, and antidepressants
S,o take a look at that list and ask yourself if you have any of those conditions? You probably have 2 or more if we are just going off of statistics here. The point is this: If you have any of those conditions and you're taking levothyroxine or Synthroid then there is a good chance you might be converting your T4 into reverse T3 instead of T3. So let's put this into perspective...
If you're taking levothyroxine or Synthroid (T4 only medication) and your body is turning it into the antithyroid metabolite which can blunt thyroid function (5) it's possible for these medications to lead to weight GAIN instead of weight LOSS. This isn't to say that it will have this effect in every person, because that's certainly not the case. In fact, most people do still need some T4 medication, the problem is that they also need pure T3 medication and most Doctors don't frequently prescribe T3 containing medications. The amount of T3 that you need depends generally on how many chronic medical problems you have or how sick you are. The sicker the patient, the more T3 they generally need. If your plan is to take Synthroid or levothyroxine for weight loss and you aren't hypothyroid then you are most certainly out of luck.

Beta blockers, antihypertensives, anti-seizure medications, diabetic medications, and antidepressants
S,o take a look at that list and ask yourself if you have any of those conditions? You probably have 2 or more if we are just going off of statistics here. The point is this: If you have any of those conditions and you're taking levothyroxine or Synthroid then there is a good chance you might be converting your T4 into reverse T3 instead of T3. So let's put this into perspective...
If you're taking levothyroxine or Synthroid (T4 only medication) and your body is turning it into the antithyroid metabolite which can blunt thyroid function (5) it's possible for these medications to lead to weight GAIN instead of weight LOSS. This isn't to say that it will have this effect in every person, because that's certainly not the case. In fact, most people do still need some T4 medication, the problem is that they also need pure T3 medication and most Doctors don't frequently prescribe T3 containing medications. The amount of T3 that you need depends generally on how many chronic medical problems you have or how sick you are. The sicker the patient, the more T3 they generally need. If your plan is to take Synthroid or levothyroxine for weight loss and you aren't hypothyroid then you are most certainly out of luck.

What Is Levothyroxine, and Are There Risks of Abuse? Is Levothyroxine a Drug of Abuse?
Is Levothyroxine a Drug of Abuse?
What Is Hypothyroidism?
Issues Affecting California
Have you lost control of your substance use?
Side Effects Associated with Levothyroxine
Long-Term Physical Effects
Abuse of Levothyroxine to Lose Weight or Enhance Performance
Withdrawal and Overdose from Levothyroxine
Dangers of Mixing Levothyroxine With Other Prescription or Illicit Medications
Professional Help to End Levothyroxine Abuse and Prevent Relapse
You aren't alone. You deserve to get help.
 This condition prevents normal movement and walking, and in severe cases, it can lead to disability. A report published in 2009 found that thyrotoxicosis from abusing levothyroxine could trigger choreoathetosis; once the patient stopped taking levothyroxine, though, her symptoms cleared within one week. Abuse of Levothyroxine to Lose Weight or Enhance Performance
Abusing levothyroxine to lose weight or increase physical energy is not a common practice, but it does occur, especially among athletes. This group is more likely to abuse drugs like this to fool drug tests while getting benefits similar to those of stimulants. A Daily Mail report from 2015 highlighted the story of a bronze medal-winning runner who had been pressured by her trainer to take levothyroxine to lose weight in order to compete again. Although levothyroxine may be misused or abused by some athletes to lose weight for competitions, the World Anti-Doping Agency (WADA) has not yet listed this medication on their list of forbidden substances. Despite its dangers, athletes are currently free to take this drug even if they have normal thyroid function. Athletes may abuse levothyroxine as a performance-enhancer, but sometimes, others abuse it to lose weight. Stimulants like Adderall and cocaine have been abused for this reason, and they are more commonly found as drugs of abuse among people who have eating disorders.

What Is Levothyroxine, and Are There Risks of Abuse?

Is Levothyroxine a Drug of Abuse?
Is Levothyroxine a Drug of Abuse?
What Is Hypothyroidism?
Issues Affecting California
Have you lost control of your substance use?
Side Effects Associated with Levothyroxine
Long-Term Physical Effects
Abuse of Levothyroxine to Lose Weight or Enhance Performance
Withdrawal and Overdose from Levothyroxine
Dangers of Mixing Levothyroxine With Other Prescription or Illicit Medications
Professional Help to End Levothyroxine Abuse and Prevent Relapse
You aren't alone. You deserve to get help.

This condition prevents normal movement and walking, and in severe cases, it can lead to disability. A report published in 2009 found that thyrotoxicosis from abusing levothyroxine could trigger choreoathetosis; once the patient stopped taking levothyroxine, though, her symptoms cleared within one week. Abuse of Levothyroxine to Lose Weight or Enhance Performance
Abusing levothyroxine to lose weight or increase physical energy is not a common practice, but it does occur, especially among athletes. This group is more likely to abuse drugs like this to fool drug tests while getting benefits similar to those of stimulants. A Daily Mail report from 2015 highlighted the story of a bronze medal-winning runner who had been pressured by her trainer to take levothyroxine to lose weight in order to compete again. Although levothyroxine may be misused or abused by some athletes to lose weight for competitions, the World Anti-Doping Agency (WADA) has not yet listed this medication on their list of forbidden substances. Despite its dangers, athletes are currently free to take this drug even if they have normal thyroid function. Athletes may abuse levothyroxine as a performance-enhancer, but sometimes, others abuse it to lose weight. Stimulants like Adderall and cocaine have been abused for this reason, and they are more commonly found as drugs of abuse among people who have eating disorders.

Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
evothyroxine and you are wondering about side effects
Understanding The Side Effects of Levothyroxine & What Causes Them
contains the active ingredient Thyroxine
Hypothyroidism is a hormone imbalance
Medications like birth-control pills contain altered hormone equivalents
exact same as the hormone that your body produces
'natural' thyroid hormones such as NDT
You are reacting to fillers, dyes, preservatives or other inactive components of the medicatio
You are taking the right medication but your dose is not sufficient
You are taking the right medication but your dose is too high
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Understanding Inactive Ingredients
Some of these dyes (especially Red 40, Yellow 5, and Yellow 6) may cause hypersensitivity reactions and health problems in certain people
different type of T4 medication like Tirosint
Many patients react poorly to these fillers and dyes
Is Your Dose of Levothyroxine Right for Your Body?
especially those with specific genetic defects in the DIO2 gene
sometimes referred to as LT3 or triiodothyronine
"normal thyroid lab tests".
seek out combination thyroid medication
monitoring your lab tests
Your energy levels should be improving
Your weight should be dropping
Your hair, skin, and nails should be improving
Your mood should be improving
Your menstrual cycle should be more regular
Your joint pain or muscle soreness should be reduced
You should NOT be having constipation
Is Levothyroxine Causing me to Gain Weight?
given what we know about thyroid physiology
converted from the inactive T4 into the active T3
I have written about this phenomenon in this post and you can read more here if you want more information
You can also track your total T3 and free T3 levels as these levels tend to correlate well with your potential for weight loss
find a doctor willing to prescribe Natural Desiccated thyroid or Liothyronine
Is Levothyroxine Making my Hair Fall out?
all of the potential causes of hair loss in thyroid patients in this post
If you had hair loss PRIOR to taking levothyroxine and it was made WORSE by the medication then you may be experiencing a negative side effect
Negative Side Effects of Levothyroxine to Watch Out for:
Jittery sensation or nervous feeling
Insomnia or inability to fall asleep
Tremors or shaking/trembling of the hands
Worsening hair loss or hair thinning
Complete list of side effects of Levothyroxine:
More common and less serious side effects:
Do you need to Switch Medications?
switching to a T4 medication like Tirosint may dramatically help
use these tips to try and help you find a knowledgeable doctor
Conclusion
References (Click to Expand)
About Dr. Westin Childs
 Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
December 3, 2020 August 13, 2016 by Dr. Westin Childs
If you just started l evothyroxine and you are wondering about side effects, I know what you are worried about: Is levothyroxine actually working for me? Why do I still feel bad if I'm on thyroid medication? How long will it take for me to start feeling BETTER? Are my new symptoms caused by levothyroxine? Why am I still gaining weight on thyroid medication? Are these symptoms normal? If you fall into any of these categories don't worry, because I'm going to go over each one of them.

Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
Levothyroxine Side Effects: Hair Loss, Weight Gain, Weight Loss & More
December 3, 2020 August 13, 2016 by Dr. Westin Childs
If you just started l evothyroxine and you are wondering about side effects, I know what you are worried about: Is levothyroxine actually working for me? Why do I still feel bad if I'm on thyroid medication? How long will it take for me to start feeling BETTER? Are my new symptoms caused by levothyroxine? Why am I still gaining weight on thyroid medication? Are these symptoms normal? If you fall into any of these categories don't worry, because I'm going to go over each one of them.

Why Synthroid isn’t Causing Weight Loss and How to Fix it Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs
 Weight gain and weight loss are much more complex than just eating less and exercising more and hoping that everything will "work itself out". The bottom line? If you are going to lose weight when you add Synthroid or levothyroxine it will only be a small amount IF the medication is right for you. What's more is that due to other mechanics in your body, the addition of T4 only medications like Synthroid and levothyroxine can actually lead to weight GAIN. It may not make sense now, but we are going to discuss below how that happens. Hint: it has to do with T4 to T3 conversion.
You can read more about how levothyroxine causes weight gain here.
Download my Free Resources: Foods to Avoid if you have Thyroid Problems:

Weight gain and weight loss are much more complex than just eating less and exercising more and hoping that everything will "work itself out". The bottom line? If you are going to lose weight when you add Synthroid or levothyroxine it will only be a small amount IF the medication is right for you. What's more is that due to other mechanics in your body, the addition of T4 only medications like Synthroid and levothyroxine can actually lead to weight GAIN. It may not make sense now, but we are going to discuss below how that happens. Hint: it has to do with T4 to T3 conversion.
You can read more about how levothyroxine causes weight gain here.
Download my Free Resources: Foods to Avoid if you have Thyroid Problems:

The Link Between Thyroid Hormones and Weight The Relationship Between Thyroid Hormones, Metabolism, and Weight
The Relationship Between Thyroid Hormones, Metabolism, and Weight
How the Thyroid Gland Works
The Role of Metabolism
The Role of Thyroid Hormones
Research
Hypothyroidism and Weight
Weight Loss With Treatment
The More Medication Myth
Hyperthyroidism and Weight
The Weight Loss Challenge
Low T3 Levels
Hormone Resistance
Leptin Resistance
Insulin Resistance
A Word From Verywell
 Once your hormone levels are within the normal range, you may lose a small amount of weight that mainly consists of the extra water and salt your body has built up. However, weight gain has multiple factors and yours is more than likely not all due to your thyroid's slowdown. One way to tell is if treatment has helped all of your other thyroid symptoms but not your weight. This indicates that your thyroid very likely isn't the only factor behind your gain. The More Medication Myth
You may have heard that thyroid hormones can be used to lose weight, even in people without thyroid disease. While synthetic thyroid hormones have been used this way in the past, research has shown that most people gain all the weight back once they stop using them. 5  Worse, being on thyroid hormones unnecessarily can result in serious side effects. For people who are already using levothyroxine, increasing the dose above what's needed can lead to more weight loss, but it's usually not significant and those pounds are often gained back once the dose is decreased again. This is also an unhealthy way to lose weight as an increased dose is also associated with adverse reactions, including heart issues, insomnia, headaches, menstrual irregularities and skin rash. 6
Are You Taking Too Much Thyroid Medication?

The Link Between Thyroid Hormones and Weight

The Relationship Between Thyroid Hormones, Metabolism, and Weight
The Relationship Between Thyroid Hormones, Metabolism, and Weight
How the Thyroid Gland Works
The Role of Metabolism
The Role of Thyroid Hormones
Research
Hypothyroidism and Weight
Weight Loss With Treatment
The More Medication Myth
Hyperthyroidism and Weight
The Weight Loss Challenge
Low T3 Levels
Hormone Resistance
Leptin Resistance
Insulin Resistance
A Word From Verywell

Once your hormone levels are within the normal range, you may lose a small amount of weight that mainly consists of the extra water and salt your body has built up. However, weight gain has multiple factors and yours is more than likely not all due to your thyroid's slowdown. One way to tell is if treatment has helped all of your other thyroid symptoms but not your weight. This indicates that your thyroid very likely isn't the only factor behind your gain. The More Medication Myth
You may have heard that thyroid hormones can be used to lose weight, even in people without thyroid disease. While synthetic thyroid hormones have been used this way in the past, research has shown that most people gain all the weight back once they stop using them. 5  Worse, being on thyroid hormones unnecessarily can result in serious side effects. For people who are already using levothyroxine, increasing the dose above what's needed can lead to more weight loss, but it's usually not significant and those pounds are often gained back once the dose is decreased again. This is also an unhealthy way to lose weight as an increased dose is also associated with adverse reactions, including heart issues, insomnia, headaches, menstrual irregularities and skin rash. 6
Are You Taking Too Much Thyroid Medication?

Why Synthroid isn’t Causing Weight Loss and How to Fix it Why Synthroid isn’t Causing Weight Loss and How to Fix it
Why Synthroid isn’t Causing Weight Loss and How to Fix it
Understanding Thyroid Function and Weight Gain vs Weight Loss
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Synthroid Cause Weight Loss?
How Long Before Synthroid Helps with Weight Loss?
Synthroid vs NDT vs T3 for Weight Loss
Patients that do well on Synthroid and T4 only medications:
Patients who do well on NDT and other forms of T4 + T3 combos:
Patients who do well on T3 only medications like Cytomel and Liothyronine:
How to make your Synthroid more Effective
Recap + What to do Next
References (Click to Expand)
About Dr. Westin Childs
 The big problem is that simply fixing your hypothyroidism by replacing thyroid hormone with Synthroid or levothyroxine does NOT fix the other hormone problems. It may resolve your hypothyroid symptoms like hair loss, fatigue, and brain fog - but it usually doesn't lead to weight loss. Why? Because the other hormone problems still persist! But what about the weight gain from hypothyroidism itself? Does getting on medication help at least a little bit? Yes, but not a lot. If you are going to lose weight after getting on Synthroid or levothyroxine it will only be about 5-15 pounds at most. That's because the thyroid usually only contributes that much to your total weight. If you are 50+ pounds overweight then 15 pounds may be from your thyroid, 30 may be from insulin resistance, 10 may be from estrogen levels or cortisol levels, etc.

The big problem is that simply fixing your hypothyroidism by replacing thyroid hormone with Synthroid or levothyroxine does NOT fix the other hormone problems. It may resolve your hypothyroid symptoms like hair loss, fatigue, and brain fog - but it usually doesn't lead to weight loss. Why? Because the other hormone problems still persist! But what about the weight gain from hypothyroidism itself? Does getting on medication help at least a little bit? Yes, but not a lot. If you are going to lose weight after getting on Synthroid or levothyroxine it will only be about 5-15 pounds at most. That's because the thyroid usually only contributes that much to your total weight. If you are 50+ pounds overweight then 15 pounds may be from your thyroid, 30 may be from insulin resistance, 10 may be from estrogen levels or cortisol levels, etc.

levothyroxine losing weight - MedHelp Levothyroxine losing weight
Levothyroxine losing weight
Common Questions and Answers about Levothyroxine losing weight
synthroid
 preganacy test over four months,all neg.i feel preganant ,i've had a total tyroidectomy last tsh was0.03.levothyroxin decreased.could it be a false neg or more likely throid levels.also difficulty losing weight evevn though hyper. This discussion is related to Alternate dosages of levothyroxine each day?. Read More
tsh test indicated hypothryroid. My MD prescribed levothyroxine 50mcg. My energy level increased, my weight increased (and I was overweight to begin with) and I'm losing my hair. She increased the dosage changed to synthroid 75mcg and my body reacted with severe palpitations. I went back to the lower dosage. I believe that the thyroid medication actually caused the hair loss and was not a symptom of low tsh. I would like to discontinue this medication. If so, will my hair grow back?

levothyroxine losing weight - MedHelp

preganacy test over four months,all neg.i feel preganant ,i've had a total tyroidectomy last tsh was0.03.levothyroxin decreased.could it be a false neg or more likely throid levels.also difficulty losing weight evevn though hyper. This discussion is related to Alternate dosages of levothyroxine each day?. Read More
tsh test indicated hypothryroid. My MD prescribed levothyroxine 50mcg. My energy level increased, my weight increased (and I was overweight to begin with) and I'm losing my hair. She increased the dosage changed to synthroid 75mcg and my body reacted with severe palpitations. I went back to the lower dosage. I believe that the thyroid medication actually caused the hair loss and was not a symptom of low tsh. I would like to discontinue this medication. If so, will my hair grow back?

What Is Levothyroxine Used For? What Is Levothyroxine Used For?
What Is Levothyroxine Used For?
An Overview of Levothyroxine Uses
Levothyroxine Uses for Hypothyroidism
 Levothyroxine works to boost the body's thyroid hormone levels, which can work wonders for the symptoms of hypothyroidism. However, do not expect results overnight; it often takes several weeks to notice any improvement. Levothyroxine should never be used to increase energy or cause weight loss in people without a thyroid problem. It is important to understand that with levothyroxine, more is not necessarily better. Taking too much (or taking it without a medical reason) will cause symptoms of hyperthyroidism, some of which can be quite dangerous. This is why your healthcare provider will carefully monitor you, using blood tests, to make sure you are not taking too much or too little levothyroxine.

What Is Levothyroxine Used For?

What Is Levothyroxine Used For?
What Is Levothyroxine Used For?
An Overview of Levothyroxine Uses
Levothyroxine Uses for Hypothyroidism

Levothyroxine works to boost the body's thyroid hormone levels, which can work wonders for the symptoms of hypothyroidism. However, do not expect results overnight; it often takes several weeks to notice any improvement. Levothyroxine should never be used to increase energy or cause weight loss in people without a thyroid problem. It is important to understand that with levothyroxine, more is not necessarily better. Taking too much (or taking it without a medical reason) will cause symptoms of hyperthyroidism, some of which can be quite dangerous. This is why your healthcare provider will carefully monitor you, using blood tests, to make sure you are not taking too much or too little levothyroxine.

Synthroid (levothyroxine): Basics, Side Effects & Reviews
COMMON BRANDS
DRUG CLASS
CONTROLLED SUBSTANCE CLASSIFICATION
GENERIC STATUS
AVAILABILITY
What is Synthroid (levothyroxine)?
How Synthroid (levothyroxine) works
What is Synthroid (levothyroxine) used for?
Synthroid (levothyroxine) dosage forms
Typical dosing for Synthroid (levothyroxine)
Frequently asked questions about Synthroid (levothyroxine)
Pros and cons of Synthroid (levothyroxine)
Pros
Cons
Pharmacist tips for Synthroid (levothyroxine)
What are the side effects of Synthroid (levothyroxine)?
Common side effects
The following side effects have also been reported:
Less common
Rare
Symptoms of overdose
Less common
What are the risks and warnings for Synthroid (levothyroxine)?
NOT FOR WEIGHT LOSS
HEART PROBLEMS
ADRENAL CRISIS
WORSENING DIABETES
EFFECTS ON BONES
Interactions between Synthroid (levothyroxine) and other medications
What are people’s reviews of Synthroid (levothyroxine)?
How much does Synthroid (levothyroxine) cost?
Lowest GoodRx Price
Synthroid, Euthyrox, Levoxyl, Tirosint, Unithroid (brand)
$ 45.41
Lowest GoodRx Price
levothyroxine (generic)
$ 4.00
What is the latest news about Synthroid (levothyroxine)?
Synthroid (levothyroxine) images
 Synthroid (levothyroxine) can cause you to lose weight as a side effect, but should never be used for weight loss. Pros and cons of Synthroid (levothyroxine)
Pros
Works well to replace low thyroid hormone levels in your body
Safe to use for all ages and during pregnancy
Affordable, generic version is available
Only needs to be taken once a day
Most side effects are dose-related, and will go away when the dose is lowered
Cons
Must be separated from food and other medications
Might take months to find the right dose
Takes 6 to 8 weeks to see the full effects
You'll need routine blood tests to make sure you are on the right dose of Synthroid (levothyroxine). Missed doses can cause symptoms of hypothyroidism, such as fatigue, weight gain, increased sensitivity to cold, constipation, and dry skin
Cannot be used in people with untreated adrenal insufficiency
Should not be used to treat conditions not associated with abnormal thyroid function (like benign thyroid nodules, nontoxic diffuse goiter, swelling of thyroid gland caused by infection)
Pharmacist tips for Synthroid (levothyroxine)
Most of the side effects are symptoms of hyperthyroidism and it usually means your dose is too high. If you have any of the listed side effects, talk to your provider; they might need to lower your dose. Unlike other medications, not all generic forms of Synthroid (levothyroxine) are the same. Try to fill this medication at the same pharmacy every month and pay attention to the manufacturer. You might not be able to change the manufacturer the pharmacy uses, but you can talk to your provider about changing your dose if needed. Don't stop taking Synthroid (levothyroxine) without talking to your provider first. They might need to lower your dose gradually.

Synthroid (levothyroxine): Basics, Side Effects & Reviews

COMMON BRANDS
DRUG CLASS
CONTROLLED SUBSTANCE CLASSIFICATION
GENERIC STATUS
AVAILABILITY
What is Synthroid (levothyroxine)?
How Synthroid (levothyroxine) works
What is Synthroid (levothyroxine) used for?
Synthroid (levothyroxine) dosage forms
Typical dosing for Synthroid (levothyroxine)
Frequently asked questions about Synthroid (levothyroxine)
Pros and cons of Synthroid (levothyroxine)
Pros
Cons
Pharmacist tips for Synthroid (levothyroxine)
What are the side effects of Synthroid (levothyroxine)?
Common side effects
The following side effects have also been reported:
Less common
Rare
Symptoms of overdose
Less common
What are the risks and warnings for Synthroid (levothyroxine)?
NOT FOR WEIGHT LOSS
HEART PROBLEMS
ADRENAL CRISIS
WORSENING DIABETES
EFFECTS ON BONES
Interactions between Synthroid (levothyroxine) and other medications
What are people’s reviews of Synthroid (levothyroxine)?
How much does Synthroid (levothyroxine) cost?
Lowest GoodRx Price
Synthroid, Euthyrox, Levoxyl, Tirosint, Unithroid (brand)
$ 45.41
Lowest GoodRx Price
levothyroxine (generic)
$ 4.00
What is the latest news about Synthroid (levothyroxine)?
Synthroid (levothyroxine) images

Levothyroxine for Hypothyroidism: What You Need to Know | Diet vs Disease Levothyroxine for Hypothyroidism: What You Need to Know
Levothyroxine for Hypothyroidism: What You Need to Know
What is Hypothyroidism?
What is Levothyroxine Sodium?
How Levothyroxine Works
When to Use Levothyroxine
Levothyroxine Dosage
Levothyroxine Side Effects
Levothyroxine Precautions
Drug and Food Interactions with Levothyroxine
What if Levothyroxine Doesn’t Work?
T3 Combination or Desiccated Thyroid
Levothyroxine Works
Would you like direct Dietitian guidance to sustainably reverse hypothyroid symptoms and reclaim our life?
About Joe Leech, Dietitian (MSc Nutrition & Dietetics)
 Excessively high doses can occur due to levothyroxine’s narrow therapeutic window. This means there is a small difference between having too little and too much levothyroxine. However, when dosed correctly, the following side effects are less likely to occur ( 10 ):
Weight loss
Tremor
Headache
Nausea
Vomiting
Diarrhea
Stomach cramps
Nervousness
Irritability
Insomnia
Excessive sweating
Increased appetite
Fever
Changes in menstrual cycle
Sensitivity to heat
Temporary hair loss, particularly in children during the first month of therapy. Some of the more concerning levothyroxine side effects include ( 10 ):
Seizures
Chest pain
Irregular heart beat
Swelling of the ankles
Allergic reaction to “fillers” found in levothyroxine tablets can lead to swelling of the face, tongue or throat. Summary: If using too high a dose, levothyroxine can cause numerous side effects. In some cases, levothyroxine can result in serious cardiac, allergy and neurological symptoms. Levothyroxine Precautions
Levothyroxine should be used carefully or not at all in some circumstances. It should not be used as a fat loss aid by people with normal thyroid function. This can cause serious side effects ( 6 ).

Levothyroxine for Hypothyroidism: What You Need to Know | Diet vs Disease

Levothyroxine for Hypothyroidism: What You Need to Know
Levothyroxine for Hypothyroidism: What You Need to Know
What is Hypothyroidism?
What is Levothyroxine Sodium?
How Levothyroxine Works
When to Use Levothyroxine
Levothyroxine Dosage
Levothyroxine Side Effects
Levothyroxine Precautions
Drug and Food Interactions with Levothyroxine
What if Levothyroxine Doesn’t Work?
T3 Combination or Desiccated Thyroid
Levothyroxine Works
Would you like direct Dietitian guidance to sustainably reverse hypothyroid symptoms and reclaim our life?
About Joe Leech, Dietitian (MSc Nutrition & Dietetics)

Excessively high doses can occur due to levothyroxine’s narrow therapeutic window. This means there is a small difference between having too little and too much levothyroxine. However, when dosed correctly, the following side effects are less likely to occur ( 10 ):
Weight loss
Tremor
Headache
Nausea
Vomiting
Diarrhea
Stomach cramps
Nervousness
Irritability
Insomnia
Excessive sweating
Increased appetite
Fever
Changes in menstrual cycle
Sensitivity to heat
Temporary hair loss, particularly in children during the first month of therapy. Some of the more concerning levothyroxine side effects include ( 10 ):
Seizures
Chest pain
Irregular heart beat
Swelling of the ankles
Allergic reaction to “fillers” found in levothyroxine tablets can lead to swelling of the face, tongue or throat. Summary: If using too high a dose, levothyroxine can cause numerous side effects. In some cases, levothyroxine can result in serious cardiac, allergy and neurological symptoms. Levothyroxine Precautions
Levothyroxine should be used carefully or not at all in some circumstances. It should not be used as a fat loss aid by people with normal thyroid function. This can cause serious side effects ( 6 ).

Can Levothyroxine make you gain weight? - Thyroid UK Can Levothyroxine make you gain weight?
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Can Levothyroxine make you gain weight?
Feeling alone with a thyroid condition?
Feeling alone with a thyroid condition?
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Can Levothyroxine make you gain weight? - Thyroid UK

Can Levothyroxine make you gain weight?
Thyroid UK
Home
About
Posts
Members
Can Levothyroxine make you gain weight?
Feeling alone with a thyroid condition?
Feeling alone with a thyroid condition?
13 Replies
You may also like...
Can thyroxine make you gain weight?
Weight Gain on Levothyroxine
Weight gain on Levothyroxine & HRT?
Weight gain on Levothyroxine
Weight gain on Levothyroxine

So much so that my doc (and a...
Tiredofthis77 • 2 years ago
47 Replies
Weight Gain on Levothyroxine
common to continue to experience weight gain after starting Levothyroxine? I am still in the...
Katie1003 • 1 year ago
22 Replies
Weight gain on Levothyroxine & HRT? impede efforts to lose weight? Been on Levo since January this year -currently taking 125mcg &...
Camomile1 • 4 years ago
16 Replies
Weight gain on Levothyroxine
managed to lose weight on Levo? I have been a bit overweight for a while and couldn't lose any. I...
Countrykitten • 3 years ago
28 Replies
Weight gain on Levothyroxine
problems in gaining weight on levothyroxine? I have Hashimotos and my GP prescribed levothyroxine...
Janspenc • 2 years ago
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Levothyroxine: Side effects, dosage, uses, and more Levothyroxine
Levothyroxine
Highlights for levothyroxine
What is levothyroxine?
Why it’s used
How it works
Levothyroxine side effects
More common side effects
Serious side effects
Levothyroxine may interact with other medications
Interactions that increase the risk of side effects
Interactions that can make your drugs less effective
How to take levothyroxine
Drug forms and strengths
Dosage for hypothyroidism
Adult dosage (ages 18–49 years):
Child dosage (ages 0–17 years):
Senior dosage (ages 50 years and older):
Dosage for goiter
Adult dosage (ages 18 years and older):
Child dosage (ages 0–17 years):
Dosage for thyroid cancer
Adult dosage (ages 18 years and older):
Child dosage (ages 0–17 years):
Dosage for special populations
For people with heart disease:
Warnings
Vitamin supplements and antacids warning
Allergy warning
Don’t take this drug again if you’ve ever had an allergic reaction to it. Taking it again could be fatal (cause death).
Food interactions warning
Warnings for people with certain health conditions
Warnings for other groups
Take as directed
Important considerations for taking levothyroxine
General
Storage
Refills
Travel
Clinical monitoring
Your diet
Prior authorization
Are there any alternatives?
 A class of drugs is a group of medications that work in a similar way. These drugs are often used to treat similar conditions. Levothyroxine works by providing the thyroid hormone that your thyroid gland would produce if it were working normally. Levothyroxine side effects
Levothyroxine oral tablet can cause side effects. More common side effects
The more common side effects of levothyroxine can include: increased appetite
weight loss
heat sensitivity
excessive sweating
headache
hyperactivity
nervousness
anxiety
irritability
mood swings
trouble sleeping
tiredness
tremors
muscle weakness
changes in menstrual periods
hair loss (usually temporary)
diarrhea
vomiting
stomach cramps
If these effects are mild, they may go away within a few days or a couple of weeks. If they’re more severe or don’t go away, talk to your doctor or pharmacist. Serious side effects
Call your doctor right away if you have serious side effects. Call 911 if your symptoms feel life threatening or if you think you’re having a medical emergency. Serious side effects and their symptoms can include the following:

Levothyroxine: Side effects, dosage, uses, and more

Levothyroxine
Levothyroxine
Highlights for levothyroxine
What is levothyroxine?
Why it’s used
How it works
Levothyroxine side effects
More common side effects
Serious side effects
Levothyroxine may interact with other medications
Interactions that increase the risk of side effects
Interactions that can make your drugs less effective
How to take levothyroxine
Drug forms and strengths
Dosage for hypothyroidism
Adult dosage (ages 18–49 years):
Child dosage (ages 0–17 years):
Senior dosage (ages 50 years and older):
Dosage for goiter
Adult dosage (ages 18 years and older):
Child dosage (ages 0–17 years):
Dosage for thyroid cancer
Adult dosage (ages 18 years and older):
Child dosage (ages 0–17 years):
Dosage for special populations
For people with heart disease:
Warnings
Vitamin supplements and antacids warning
Allergy warning
Don’t take this drug again if you’ve ever had an allergic reaction to it. Taking it again could be fatal (cause death).
Food interactions warning
Warnings for people with certain health conditions
Warnings for other groups
Take as directed
Important considerations for taking levothyroxine
General
Storage
Refills
Travel
Clinical monitoring
Your diet
Prior authorization
Are there any alternatives?

A class of drugs is a group of medications that work in a similar way. These drugs are often used to treat similar conditions. Levothyroxine works by providing the thyroid hormone that your thyroid gland would produce if it were working normally. Levothyroxine side effects
Levothyroxine oral tablet can cause side effects. More common side effects
The more common side effects of levothyroxine can include: increased appetite
weight loss
heat sensitivity
excessive sweating
headache
hyperactivity
nervousness
anxiety
irritability
mood swings
trouble sleeping
tiredness
tremors
muscle weakness
changes in menstrual periods
hair loss (usually temporary)
diarrhea
vomiting
stomach cramps
If these effects are mild, they may go away within a few days or a couple of weeks. If they’re more severe or don’t go away, talk to your doctor or pharmacist. Serious side effects
Call your doctor right away if you have serious side effects. Call 911 if your symptoms feel life threatening or if you think you’re having a medical emergency. Serious side effects and their symptoms can include the following:

What Is Levothyroxine, and Are There Risks of Abuse? Is Levothyroxine a Drug of Abuse?
Is Levothyroxine a Drug of Abuse?
What Is Hypothyroidism?
Issues Affecting California
Have you lost control of your substance use?
Side Effects Associated with Levothyroxine
Long-Term Physical Effects
Abuse of Levothyroxine to Lose Weight or Enhance Performance
Withdrawal and Overdose from Levothyroxine
Dangers of Mixing Levothyroxine With Other Prescription or Illicit Medications
Professional Help to End Levothyroxine Abuse and Prevent Relapse
You aren't alone. You deserve to get help.
 A Daily Mail report from 2015 highlighted the story of a bronze medal-winning runner who had been pressured by her trainer to take levothyroxine to lose weight in order to compete again. Although levothyroxine may be misused or abused by some athletes to lose weight for competitions, the World Anti-Doping Agency (WADA) has not yet listed this medication on their list of forbidden substances. Despite its dangers, athletes are currently free to take this drug even if they have normal thyroid function. Athletes may abuse levothyroxine as a performance-enhancer, but sometimes, others abuse it to lose weight. Stimulants like Adderall and cocaine have been abused for this reason, and they are more commonly found as drugs of abuse among people who have eating disorders. However, levothyroxine has sometimes been found as a drug of abuse in these cases. Withdrawal and Overdose from Levothyroxine
Withdrawing from levothyroxine is not dangerous. In fact, if the drug is abused, quitting is safer than continuing, but it may include a resurgence of symptoms associated with the underlying thyroid problem. Symptoms include rapid weight gain, depression, low energy, and dry skin. People who abuse levothyroxine may develop insulin resistance during withdrawal, which can trigger diabetes.

A Daily Mail report from 2015 highlighted the story of a bronze medal-winning runner who had been pressured by her trainer to take levothyroxine to lose weight in order to compete again. Although levothyroxine may be misused or abused by some athletes to lose weight for competitions, the World Anti-Doping Agency (WADA) has not yet listed this medication on their list of forbidden substances. Despite its dangers, athletes are currently free to take this drug even if they have normal thyroid function. Athletes may abuse levothyroxine as a performance-enhancer, but sometimes, others abuse it to lose weight. Stimulants like Adderall and cocaine have been abused for this reason, and they are more commonly found as drugs of abuse among people who have eating disorders. However, levothyroxine has sometimes been found as a drug of abuse in these cases. Withdrawal and Overdose from Levothyroxine
Withdrawing from levothyroxine is not dangerous. In fact, if the drug is abused, quitting is safer than continuing, but it may include a resurgence of symptoms associated with the underlying thyroid problem. Symptoms include rapid weight gain, depression, low energy, and dry skin. People who abuse levothyroxine may develop insulin resistance during withdrawal, which can trigger diabetes.

Can Levothyroxine make you gain weight? - Thyroid UK Can Levothyroxine make you gain weight?
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Suddently stopping your medication can result in DEATH !!! You could have unseen damage to your organs and feel fine, until you collaspe into a coma. Please please please see medical advice. You may also like...
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Synthroid and Weight Loss - Thyroid Advisor Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References
 One study revealed that T4 replacement therapy with levothyroxine has favorable effects on BMI, blood pressure, and cholesterol levels. The improvement in these parameters could contribute to reduced cardiovascular risk in this patient population [9]. It is not uncommon for hypothyroid patients to change their lifestyle and still experience weight gain due to the condition they have. Synthroid can help, but as established above, it comes down to taking the right dosage. Weight loss that occurs due to this medication is most prominent in the early stages of treatment because your body still hasn’t adapted to the increase in metabolic rate. As the treatment with Synthroid continues, the body adjusts to the faster metabolism and weight loss slows down. We can compare this to weight loss that occurs when we just start with a training program. At the beginning, we notice major improvements in our appearance. Later, weight loss slows down as we get used to the same exercise routine. Synthroid can contribute to weight loss through different factors, including:

Synthroid and Weight Loss - Thyroid Advisor

Synthroid and Weight Loss
Synthroid and Weight Loss
Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References

One study revealed that T4 replacement therapy with levothyroxine has favorable effects on BMI, blood pressure, and cholesterol levels. The improvement in these parameters could contribute to reduced cardiovascular risk in this patient population [9]. It is not uncommon for hypothyroid patients to change their lifestyle and still experience weight gain due to the condition they have. Synthroid can help, but as established above, it comes down to taking the right dosage. Weight loss that occurs due to this medication is most prominent in the early stages of treatment because your body still hasn’t adapted to the increase in metabolic rate. As the treatment with Synthroid continues, the body adjusts to the faster metabolism and weight loss slows down. We can compare this to weight loss that occurs when we just start with a training program. At the beginning, we notice major improvements in our appearance. Later, weight loss slows down as we get used to the same exercise routine. Synthroid can contribute to weight loss through different factors, including:

What Is Levothyroxine, and Are There Risks of Abuse? Is Levothyroxine a Drug of Abuse?
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Side Effects Associated with Levothyroxine
Long-Term Physical Effects
Abuse of Levothyroxine to Lose Weight or Enhance Performance
Withdrawal and Overdose from Levothyroxine
Dangers of Mixing Levothyroxine With Other Prescription or Illicit Medications
Professional Help to End Levothyroxine Abuse and Prevent Relapse
You aren't alone. You deserve to get help.
 Cardiovascular damage may also be a side effect of levothyroxine. Signs of a heart attack like shortness of breath and chest pain, signs of heart failure like extreme tiredness and swelling in the legs, irregular heart rhythm, or a very fast heartbeat should all be taken seriously—get emergency medical treatment. While these symptoms may appear suddenly, the damage done to the heart may take time. One unusual side effect called choreoathetosis is associated with abuse of levothyroxine or taking too much of this drug. This is a movement disorder in which the body involuntarily twitches or writhes, leading to impaired functioning in daily life. This condition prevents normal movement and walking, and in severe cases, it can lead to disability. A report published in 2009 found that thyrotoxicosis from abusing levothyroxine could trigger choreoathetosis; once the patient stopped taking levothyroxine, though, her symptoms cleared within one week. Abuse of Levothyroxine to Lose Weight or Enhance Performance
Abusing levothyroxine to lose weight or increase physical energy is not a common practice, but it does occur, especially among athletes. This group is more likely to abuse drugs like this to fool drug tests while getting benefits similar to those of stimulants.

Cardiovascular damage may also be a side effect of levothyroxine. Signs of a heart attack like shortness of breath and chest pain, signs of heart failure like extreme tiredness and swelling in the legs, irregular heart rhythm, or a very fast heartbeat should all be taken seriously—get emergency medical treatment. While these symptoms may appear suddenly, the damage done to the heart may take time. One unusual side effect called choreoathetosis is associated with abuse of levothyroxine or taking too much of this drug. This is a movement disorder in which the body involuntarily twitches or writhes, leading to impaired functioning in daily life. This condition prevents normal movement and walking, and in severe cases, it can lead to disability. A report published in 2009 found that thyrotoxicosis from abusing levothyroxine could trigger choreoathetosis; once the patient stopped taking levothyroxine, though, her symptoms cleared within one week. Abuse of Levothyroxine to Lose Weight or Enhance Performance
Abusing levothyroxine to lose weight or increase physical energy is not a common practice, but it does occur, especially among athletes. This group is more likely to abuse drugs like this to fool drug tests while getting benefits similar to those of stimulants.

Synthroid and Weight Loss - Thyroid Advisor Synthroid and Weight Loss
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Thyroid Advisor
August 31, 2017
Hypothyroidism and weight gain
Synthroid and weight loss
How can Synthroid aid weight loss?
Can I use Synthroid for weight loss if I don’t have hypothyroidism?
Weight loss tips for hypothyroid patients
Conclusion
References
 So, don’t let this info discourage you from trying to manage your weight if dealing with hypothyroidism and taking Synthroid. How can Synthroid aid weight loss? Synthroid can still be a useful ally against extra pounds for hypothyroid individuals. Most importantly, it has a beneficial impact on parameters associated with metabolic syndrome and atherosclerosis in patients who are diagnosed with hypothyroidism. Both health problems are strongly linked to excess body weight. One study revealed that T4 replacement therapy with levothyroxine has favorable effects on BMI, blood pressure, and cholesterol levels. The improvement in these parameters could contribute to reduced cardiovascular risk in this patient population [9]. It is not uncommon for hypothyroid patients to change their lifestyle and still experience weight gain due to the condition they have. Synthroid can help, but as established above, it comes down to taking the right dosage. Weight loss that occurs due to this medication is most prominent in the early stages of treatment because your body still hasn’t adapted to the increase in metabolic rate.

So, don’t let this info discourage you from trying to manage your weight if dealing with hypothyroidism and taking Synthroid. How can Synthroid aid weight loss? Synthroid can still be a useful ally against extra pounds for hypothyroid individuals. Most importantly, it has a beneficial impact on parameters associated with metabolic syndrome and atherosclerosis in patients who are diagnosed with hypothyroidism. Both health problems are strongly linked to excess body weight. One study revealed that T4 replacement therapy with levothyroxine has favorable effects on BMI, blood pressure, and cholesterol levels. The improvement in these parameters could contribute to reduced cardiovascular risk in this patient population [9]. It is not uncommon for hypothyroid patients to change their lifestyle and still experience weight gain due to the condition they have. Synthroid can help, but as established above, it comes down to taking the right dosage. Weight loss that occurs due to this medication is most prominent in the early stages of treatment because your body still hasn’t adapted to the increase in metabolic rate.

Levothyroxine Withdrawal | Healthfully
Levothyroxine Withdrawal
Hypothyroidism
Depression and Anxiety
Insulin Resistance
Dry Skin
 Hypothyroidism
Levothyroxine withdrawal may cause hypothyroidism, or underactive thyroid 2 3 4. Hypothyroidism causes weight gain, fatigue, depression and sensitivity to cold because your body does not have enough thyroid hormone so your body processes slow down 2. Patients with thyroid cancer may suffer acute hypothyroidism because of levothyroxine withdrawal 2 3 4. Depression and Anxiety
L-Carnitine & Hypothyroidism
Learn More
Thyroid cancer patients stop or reduce their dosages of levothyroxine before follow-up or diagnostic procedures. Reducing your dosage or stopping altogether can cause depression and increased anxiety, according to a study published in December 2005 in the “European Journal of Endocrinology.” The study found that there is a consistent pattern of increased anxiety of around 44 percent and depression of around 17 percent in patients undergoing levothyroxine withdrawal 3 4. Insulin Resistance
Thyroid hormones help in the modulation of glucose metabolism, your body’s insulin response to blood sugar. Levothyroxine withdrawal can cause a state of insulin resistance, according to a study published in the June 2009 issue of “Thyroid.” Four patients were tested after six weeks of levothyroxine withdrawal and were found to have a significant degree of insulin resistance, which resulted in reduced glucose disposal -- how fast your body stabilizes blood sugar 6. Blood glucose affects your body’s energy level and ability to burn fat.

Levothyroxine Withdrawal | Healthfully

Levothyroxine Withdrawal
Hypothyroidism
Depression and Anxiety
Insulin Resistance
Dry Skin

Hypothyroidism
Levothyroxine withdrawal may cause hypothyroidism, or underactive thyroid 2 3 4. Hypothyroidism causes weight gain, fatigue, depression and sensitivity to cold because your body does not have enough thyroid hormone so your body processes slow down 2. Patients with thyroid cancer may suffer acute hypothyroidism because of levothyroxine withdrawal 2 3 4. Depression and Anxiety
L-Carnitine & Hypothyroidism
Learn More
Thyroid cancer patients stop or reduce their dosages of levothyroxine before follow-up or diagnostic procedures. Reducing your dosage or stopping altogether can cause depression and increased anxiety, according to a study published in December 2005 in the “European Journal of Endocrinology.” The study found that there is a consistent pattern of increased anxiety of around 44 percent and depression of around 17 percent in patients undergoing levothyroxine withdrawal 3 4. Insulin Resistance
Thyroid hormones help in the modulation of glucose metabolism, your body’s insulin response to blood sugar. Levothyroxine withdrawal can cause a state of insulin resistance, according to a study published in the June 2009 issue of “Thyroid.” Four patients were tested after six weeks of levothyroxine withdrawal and were found to have a significant degree of insulin resistance, which resulted in reduced glucose disposal -- how fast your body stabilizes blood sugar 6. Blood glucose affects your body’s energy level and ability to burn fat.

The Best Thyroid Medication for Weight Loss | Healthy Living The Best Thyroid Medication for Weight Loss
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An underactive thyroid, also known as hypothyroidism, causes your thyroid gland to underproduce thyroxine. As a result you may experience weight gain, joint pain, heart disease and infertility, according to"The Everything Health Guide to Thyroid Disease." Your doctor will prescribe thyroid replacement hormones to restore balance, which can also reduce your weight by increasing metabolism. Unithroid, Levoxyl and Synthroid are variations of levothyroxine, a synthetic thyroid hormone, according to the Mayo Clinic. Thyroid medication should only be used if you suffer from a thyroid disorder; using it with a normally functioning thyroid is ineffective and can cause life-threatening disorders. Levoxyl
This synthetic thyroid medication helps restore thyroid function and prevent goiters.

The Best Thyroid Medication for Weight Loss | Healthy Living

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Levoxyl
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An underactive thyroid, also known as hypothyroidism, causes your thyroid gland to underproduce thyroxine. As a result you may experience weight gain, joint pain, heart disease and infertility, according to"The Everything Health Guide to Thyroid Disease." Your doctor will prescribe thyroid replacement hormones to restore balance, which can also reduce your weight by increasing metabolism. Unithroid, Levoxyl and Synthroid are variations of levothyroxine, a synthetic thyroid hormone, according to the Mayo Clinic. Thyroid medication should only be used if you suffer from a thyroid disorder; using it with a normally functioning thyroid is ineffective and can cause life-threatening disorders. Levoxyl
This synthetic thyroid medication helps restore thyroid function and prevent goiters.

Compare Levothyroxine vs Synthroid and Weight Gain - Comprehensive Analysis by Treato - Page 3 Levothyroxine and Synthroid and Weight Gain
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Thank you for sharing your experience! ? She put me on levothyroxine but after about three weeks of ...
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" I went up to 115 pounds, it was a lot for me since I am only 4'11. ... I went to my doctor and she diagnosed me with hypothyroidism. She put me on levothyroxine but after about three weeks of taking it I feel seriously ill, rapid heart beat and all.

Compare Levothyroxine vs Synthroid and Weight Gain - Comprehensive Analysis by Treato - Page 3

Levothyroxine and Synthroid and Weight Gain
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Levothyroxine is a thyroid medication. Uses: Levothyroxine is prescribed for Hypothyroidism and Hashimoto's Disease and is mostly mentioned together with these indications. Read More
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Thank you for sharing your experience! ? She put me on levothyroxine but after about three weeks of ...
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" I went up to 115 pounds, it was a lot for me since I am only 4'11. ... I went to my doctor and she diagnosed me with hypothyroidism. She put me on levothyroxine but after about three weeks of taking it I feel seriously ill, rapid heart beat and all.

What Is Levothyroxine Used For? What Is Levothyroxine Used For?
What Is Levothyroxine Used For?
An Overview of Levothyroxine Uses
Levothyroxine Uses for Hypothyroidism
 However, sometimes too much of the thyroid is destroyed, leaving people with an underactive thyroid (which will need to be treated with thyroid hormone replacement, such as levothyroxine). Whatever the cause, the end result is the same -- the thyroid does not produce enough thyroid hormones, which can result in the following symptoms of hypothyroidism: Weight gain
Fatigue and weakness
Feeling cold all the time
Hair loss and/or coarse, dry hair
Skin that is dry, rough, and pale
Constipation
A decreased sex drive
Muscle cramps
Changes in the menstrual cycle
Depression
Irritability
Memory loss. As you can see, many of these symptoms can be subtle, and many people blame their symptoms on aging or stress, without realizing they have a thyroid problem. Because the symptoms are subtle and because hypothyroidism can be detected with a simple and inexpensive blood test, healthcare providers recommend that most adults be tested periodically. Levothyroxine works to boost the body's thyroid hormone levels, which can work wonders for the symptoms of hypothyroidism. However, do not expect results overnight; it often takes several weeks to notice any improvement. Levothyroxine should never be used to increase energy or cause weight loss in people without a thyroid problem. It is important to understand that with levothyroxine, more is not necessarily better.

What Is Levothyroxine Used For?

However, sometimes too much of the thyroid is destroyed, leaving people with an underactive thyroid (which will need to be treated with thyroid hormone replacement, such as levothyroxine). Whatever the cause, the end result is the same -- the thyroid does not produce enough thyroid hormones, which can result in the following symptoms of hypothyroidism: Weight gain
Fatigue and weakness
Feeling cold all the time
Hair loss and/or coarse, dry hair
Skin that is dry, rough, and pale
Constipation
A decreased sex drive
Muscle cramps
Changes in the menstrual cycle
Depression
Irritability
Memory loss. As you can see, many of these symptoms can be subtle, and many people blame their symptoms on aging or stress, without realizing they have a thyroid problem. Because the symptoms are subtle and because hypothyroidism can be detected with a simple and inexpensive blood test, healthcare providers recommend that most adults be tested periodically. Levothyroxine works to boost the body's thyroid hormone levels, which can work wonders for the symptoms of hypothyroidism. However, do not expect results overnight; it often takes several weeks to notice any improvement. Levothyroxine should never be used to increase energy or cause weight loss in people without a thyroid problem. It is important to understand that with levothyroxine, more is not necessarily better.

Can Levothyroxine make you gain weight? - Thyroid UK Can Levothyroxine make you gain weight?
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I'm on 125mg of Levothyroxine, and have been for about 9 years, prior to this I suffered extreme tiredness and disproportionate weight gain. For a while now I've suspected that taking thyroxine has made absolutely no difference to how I feel, I am due my yearly check on Thursday, so as an experiment I haven't taken my Levothyroxine for 2 weeks. I feel absolutely no different, with the exception that I've actually lost about 5lbs, something that, even with effort, would take at least 6 weeks for me to do. So can Levo actually make you gain weight? And if it doesn't make me feel any better is there any point to taking it? Read more about...
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Can Levothyroxine make you gain weight? - Thyroid UK
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Can Levothyroxine make you gain weight? Hidden •
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I'm on 125mg of Levothyroxine, and have been for about 9 years, prior to this I suffered extreme tiredness and disproportionate weight gain. For a while now I've suspected that taking thyroxine has made absolutely no difference to how I feel, I am due my yearly check on Thursday, so as an experiment I haven't taken my Levothyroxine for 2 weeks. I feel absolutely no different, with the exception that I've actually lost about 5lbs, something that, even with effort, would take at least 6 weeks for me to do. So can Levo actually make you gain weight? And if it doesn't make me feel any better is there any point to taking it? Read more about...
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Liothyronine User Guide: Dosage, Weight Loss, Side Effects & More Liothyronine User Guide: Dosage, Weight Loss, Side Effects & More
Liothyronine User Guide: Dosage, Weight Loss, Side Effects & More
What is Liothyronine & What are its Benefits?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
How to Calculate "Optimal" Free T4, Free T3, & Reverse T3 Ratio:
Who Should Consider Using T3 Medication
Liothyronine Dosage Guide
Splitting the Dose Throughout the Day
Using Liothyronine for Weight Loss
Using Liothyronine to Treat Depression
What to Expect when starting T3 medication
Hair Loss
Other Side Effects
Final Considerations
References (Click to Expand)
About Dr. Westin Childs
 The use of liothyronine for weight loss in individuals who don't have thyroid dysfunction may cause unwanted side effects. Having said that liothyronine may help with weight loss in patients who have hypothyroidism. Some patients taking T4 only thyroid medication may suffer from low T3 syndrome or other problems that interfere with the normal conversion of T4 to T3. This may lead to lower than normal serum T3 levels which show up on blood tests (8). Patients who fall into this category generally have a normal TSH, low T3 and normal to mid-range T4 levels (9). The addition of T3 to T4 medication such as levothyroxine may help people who fit these criteria. T3 may cause weight loss over T4 medications (10) because of how it interacts with fat cells and other hormones in the body. T3 directly influences mitochondrial energy production (11) and increases thermogenesis and fat burning potential. If you have low T3 (even if your other thyroid lab studies are "within range") you may be missing out on these important benefits of T3 in your body. Bottom line?

Liothyronine User Guide: Dosage, Weight Loss, Side Effects & More

Liothyronine User Guide: Dosage, Weight Loss, Side Effects & More
Liothyronine User Guide: Dosage, Weight Loss, Side Effects & More
What is Liothyronine & What are its Benefits?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
How to Calculate "Optimal" Free T4, Free T3, & Reverse T3 Ratio:
Who Should Consider Using T3 Medication
Liothyronine Dosage Guide
Splitting the Dose Throughout the Day
Using Liothyronine for Weight Loss
Using Liothyronine to Treat Depression
What to Expect when starting T3 medication
Hair Loss
Other Side Effects
Final Considerations
References (Click to Expand)
About Dr. Westin Childs

The use of liothyronine for weight loss in individuals who don't have thyroid dysfunction may cause unwanted side effects. Having said that liothyronine may help with weight loss in patients who have hypothyroidism. Some patients taking T4 only thyroid medication may suffer from low T3 syndrome or other problems that interfere with the normal conversion of T4 to T3. This may lead to lower than normal serum T3 levels which show up on blood tests (8). Patients who fall into this category generally have a normal TSH, low T3 and normal to mid-range T4 levels (9). The addition of T3 to T4 medication such as levothyroxine may help people who fit these criteria. T3 may cause weight loss over T4 medications (10) because of how it interacts with fat cells and other hormones in the body. T3 directly influences mitochondrial energy production (11) and increases thermogenesis and fat burning potential. If you have low T3 (even if your other thyroid lab studies are "within range") you may be missing out on these important benefits of T3 in your body. Bottom line?

Levothyroxine: Side Effects, Dosages, Thyroid Disorder Treatment, Interactions, Warnings Levothyroxine
Levothyroxine
Brand Name: Synthroid, Levoxyl, L Thyroxine, Levo T, Levothroid, Levothyroxine T4, Levoxine, Tirosint, and Unithroid
Generic Name: levothyroxine sodium
Drug Class: Thyroid products
What Is Levothyroxine and How Does It Work?
Symptoms of Hypothyroidism
Dosages of Levothyroxine Should Be Given As Follows:
Adult and Pediatric Dosage Forms & Strengths
Dosage Considerations
Mild Hypothyroidism
Severe Hypothyroidism
Subclinical Hypothyroidism
Myxedema Coma
Dosing Considerations
Monitoring
Administration
QUESTION
What Are Side Effects Associated with Using Levothyroxine?
Common side effects associated with using levothyroxine include:
What Other Drugs Interact with Levothyroxine?
What Are Warnings and Precautions for Levothyroxine?
Warnings
Contraindications
Effects of Drug Abuse
Short-Term Effects
Long-Term Effects
Cautions
Pregnancy and Lactation
SLIDESHOW
From
 Common side effects associated with using levothyroxine include: Chest pain ( angina pectoris)
Joint pain
Congestive heart failure
Flushing
Increased pulse
Heart attack
Palpitations
Irregular heartbeat
Cramps
Diarrhea
Anxiety
Choking sensation
Mood changes
Headache
Heat intolerance
Insomnia
Muscle weakness
Pseudomotor cerebri
Hair loss
Weight loss
Infertility
Shortness of breath
Fever
Fast heart rate
Tremor
Decreased bone mineral density
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. What Other Drugs Interact with Levothyroxine? What Are Warnings and Precautions for Levothyroxine? Warnings
Thyroid hormones, either alone or with other therapeutic agents, should not be used for the treatment of obesity or for weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction; larger doses may produce serious or even life-threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects. This medication contains levothyroxine.

Levothyroxine: Side Effects, Dosages, Thyroid Disorder Treatment, Interactions, Warnings

Levothyroxine
Levothyroxine
Brand Name: Synthroid, Levoxyl, L Thyroxine, Levo T, Levothroid, Levothyroxine T4, Levoxine, Tirosint, and Unithroid
Generic Name: levothyroxine sodium
Drug Class: Thyroid products
What Is Levothyroxine and How Does It Work?
Symptoms of Hypothyroidism
Dosages of Levothyroxine Should Be Given As Follows:
Adult and Pediatric Dosage Forms & Strengths
Dosage Considerations
Mild Hypothyroidism
Severe Hypothyroidism
Subclinical Hypothyroidism
Myxedema Coma
Dosing Considerations
Monitoring
Administration
QUESTION
What Are Side Effects Associated with Using Levothyroxine?
Common side effects associated with using levothyroxine include:
What Other Drugs Interact with Levothyroxine?
What Are Warnings and Precautions for Levothyroxine?
Warnings
Contraindications
Effects of Drug Abuse
Short-Term Effects
Long-Term Effects
Cautions
Pregnancy and Lactation
SLIDESHOW
From

Common side effects associated with using levothyroxine include: Chest pain ( angina pectoris)
Joint pain
Congestive heart failure
Flushing
Increased pulse
Heart attack
Palpitations
Irregular heartbeat
Cramps
Diarrhea
Anxiety
Choking sensation
Mood changes
Headache
Heat intolerance
Insomnia
Muscle weakness
Pseudomotor cerebri
Hair loss
Weight loss
Infertility
Shortness of breath
Fever
Fast heart rate
Tremor
Decreased bone mineral density
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. What Other Drugs Interact with Levothyroxine? What Are Warnings and Precautions for Levothyroxine? Warnings
Thyroid hormones, either alone or with other therapeutic agents, should not be used for the treatment of obesity or for weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction; larger doses may produce serious or even life-threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects. This medication contains levothyroxine.

Levothyroxine Side Effects Levothyroxine Side Effects
Levothyroxine Side Effects
An Introduction to Levothyroxine Side Effects
Possible Side Effects of Levothyroxine
 Possible Side Effects of Levothyroxine
Just like any medication, levothyroxine can cause allergic reactions. Seek medical attention immediately if you develop any signs of an allergic reaction, including: Wheezing or difficulty breathing
An unexplained rash
Hives
Itching
Unexplained swelling (especially of the lips, mouth, or throat). Levothyroxine side effects typically occur when the dosage is too high. Too much levothyroxine can cause symptoms of hyperthyroidism (an excess of thyroid hormones). Because hyperthyroidism can be quite dangerous, any of these symptoms should be reported to your healthcare provider, as they may signal that your levothyroxine dosage needs to be decreased. These side effects may include: Feeling hot all the time and increased sweating
Fever
An increased appetite, along with weight loss
Heart palpitations
A rapid heart rate (tachycardia)
Heart failure, chest pain, or a heart attack
Difficult or painful breathing
Insomnia (see Levothyroxine and Insomnia)
Emotional changes
Hair loss (see Levothyroxine and Hair Loss)
Flushing
Broken bones or other signs of weakened bones
Menstrual problems or fertility problems
Shakiness (tremors) or muscle weakness
Hyperactivity, nervousness, anxiety, or irritability
High blood pressure ( hypertension)
Diarrhea, vomiting, or abdominal cramps (stomach cramps)
Seizures .

Levothyroxine Side Effects

Levothyroxine Side Effects
Levothyroxine Side Effects
An Introduction to Levothyroxine Side Effects
Possible Side Effects of Levothyroxine

Possible Side Effects of Levothyroxine
Just like any medication, levothyroxine can cause allergic reactions. Seek medical attention immediately if you develop any signs of an allergic reaction, including: Wheezing or difficulty breathing
An unexplained rash
Hives
Itching
Unexplained swelling (especially of the lips, mouth, or throat). Levothyroxine side effects typically occur when the dosage is too high. Too much levothyroxine can cause symptoms of hyperthyroidism (an excess of thyroid hormones). Because hyperthyroidism can be quite dangerous, any of these symptoms should be reported to your healthcare provider, as they may signal that your levothyroxine dosage needs to be decreased. These side effects may include: Feeling hot all the time and increased sweating
Fever
An increased appetite, along with weight loss
Heart palpitations
A rapid heart rate (tachycardia)
Heart failure, chest pain, or a heart attack
Difficult or painful breathing
Insomnia (see Levothyroxine and Insomnia)
Emotional changes
Hair loss (see Levothyroxine and Hair Loss)
Flushing
Broken bones or other signs of weakened bones
Menstrual problems or fertility problems
Shakiness (tremors) or muscle weakness
Hyperactivity, nervousness, anxiety, or irritability
High blood pressure ( hypertension)
Diarrhea, vomiting, or abdominal cramps (stomach cramps)
Seizures .

Synthroid (levothyroxine): Basics, Side Effects & Reviews
COMMON BRANDS
DRUG CLASS
CONTROLLED SUBSTANCE CLASSIFICATION
GENERIC STATUS
AVAILABILITY
What is Synthroid (levothyroxine)?
How Synthroid (levothyroxine) works
What is Synthroid (levothyroxine) used for?
Synthroid (levothyroxine) dosage forms
Typical dosing for Synthroid (levothyroxine)
Frequently asked questions about Synthroid (levothyroxine)
Pros and cons of Synthroid (levothyroxine)
Pros
Cons
Pharmacist tips for Synthroid (levothyroxine)
What are the side effects of Synthroid (levothyroxine)?
Common side effects
The following side effects have also been reported:
Less common
Rare
Symptoms of overdose
Less common
What are the risks and warnings for Synthroid (levothyroxine)?
NOT FOR WEIGHT LOSS
HEART PROBLEMS
ADRENAL CRISIS
WORSENING DIABETES
EFFECTS ON BONES
Interactions between Synthroid (levothyroxine) and other medications
What are people’s reviews of Synthroid (levothyroxine)?
How much does Synthroid (levothyroxine) cost?
Lowest GoodRx Price
Synthroid, Euthyrox, Levoxyl, Tirosint, Unithroid (brand)
$ 45.41
Lowest GoodRx Price
levothyroxine (generic)
$ 4.00
What is the latest news about Synthroid (levothyroxine)?
Synthroid (levothyroxine) images
 Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Less common
Abdominal or stomach cramps
change in appetite
crying
diarrhea
false or unusual sense of well-being
fear or nervousness
feeling not well or unhappy
feeling of discomfort
feeling of warmth
feeling things are not real
feelings of suspicion and distrust
hair loss
headache
increased appetite
mental depression
muscle weakness
quick to react or overreact emotionally
rapidly changing moods
redness of the face, neck, arms, and occasionally, upper chest
restlessness
trouble getting pregnant
trouble sitting still
unusual tiredness or weakness
vomiting
weight gain or loss
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088. View More
What are the risks and warnings for Synthroid (levothyroxine)? Synthroid (levothyroxine) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options
NOT FOR WEIGHT LOSS
Risk factors: Taking other medications for weight loss
Synthroid (levothyroxine) shouldn't be used for weight loss.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Less common
Abdominal or stomach cramps
change in appetite
crying
diarrhea
false or unusual sense of well-being
fear or nervousness
feeling not well or unhappy
feeling of discomfort
feeling of warmth
feeling things are not real
feelings of suspicion and distrust
hair loss
headache
increased appetite
mental depression
muscle weakness
quick to react or overreact emotionally
rapidly changing moods
redness of the face, neck, arms, and occasionally, upper chest
restlessness
trouble getting pregnant
trouble sitting still
unusual tiredness or weakness
vomiting
weight gain or loss
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088. View More
What are the risks and warnings for Synthroid (levothyroxine)? Synthroid (levothyroxine) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options
NOT FOR WEIGHT LOSS
Risk factors: Taking other medications for weight loss
Synthroid (levothyroxine) shouldn't be used for weight loss.

Top 10 Low Thyroid Symptoms Explained + Your next steps Top 10 Low Thyroid Symptoms Explained + Your next steps
Top 10 Low Thyroid Symptoms Explained + Your next steps
Why do doctors miss low thyroid symptoms?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
#1. Unexplained Weight Gain
#2. Inability to lose weight despite changing your diet and exercising more
#3. Crushing fatigue or low energy levels
#4. Unexplained hair loss
First:
Second:
#5. Menstrual irregularities
#6. Changes in mood including depression or anxiety
#7. Changes to other hormone systems in the body
#8. Chronic pain or muscle tenderness
#9. Cold hands/feet or lower than normal body temperature
#10. Constipation or changes to bowel movements
Why do hypothyroid patients on thyroid medication still have side effects?
Hypothyroidism FAQ:
What are the causes of hypothyroidism?
Can hypothyroidism make you feel dizzy?
Can nausea be a symptom of hypothyroidism?
Can a sore throat be a sign of thyroid problems?
Why do I have hypothyroidism?
Can stress cause thyroid problems?
Can your thyroid alter your cholesterol?
What is the cause of high TSH levels?
Can hypothyroidism be cured?
How do you diagnose hypothyroidism?
What does it mean to have an underactive thyroid?
Which type of thyroid problem causes weight gain?
Now it's your turn:
References (Click to Expand)
About Dr. Westin Childs
 We all know that this is a symptom of hypothyroidism, it's a classic symptom and one that is confirmed by every major and conventional establishment (2). But here is the interesting thing: If hypothyroidism causes weight gain, then why doesn't replacing thyroid hormone with Synthroid or levothyroxine cause weight loss? ( in the majority of patients)
Why is it that patients who have their thyroid taken out gain around 15-20 pounds on average despite being treated with thyroid hormone to a normal TSH? Either we don't really understand the true function of thyroid hormone in the body, or we don't understand how to replace thyroid hormone correctly... or both. I think it's really a combination of both and it's something I've explained in detail here . The truth is that thyroid hormone impacts other hormones in your body that directly regulate your fat cells and how your body burns fat. Thyroid hormone (T3 specifically) has a direct effect on hormones like leptin and insulin. Together these hormones determine how many calories you are going to burn, what your metabolism is going to be, and how your body will distribute and place fat on your body. Low levels of thyroid hormones potentiate a condition known as insulin resistance (3).

Top 10 Low Thyroid Symptoms Explained + Your next steps

Top 10 Low Thyroid Symptoms Explained + Your next steps
Top 10 Low Thyroid Symptoms Explained + Your next steps
Why do doctors miss low thyroid symptoms?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
#1. Unexplained Weight Gain
#2. Inability to lose weight despite changing your diet and exercising more
#3. Crushing fatigue or low energy levels
#4. Unexplained hair loss
First:
Second:
#5. Menstrual irregularities
#6. Changes in mood including depression or anxiety
#7. Changes to other hormone systems in the body
#8. Chronic pain or muscle tenderness
#9. Cold hands/feet or lower than normal body temperature
#10. Constipation or changes to bowel movements
Why do hypothyroid patients on thyroid medication still have side effects?
Hypothyroidism FAQ:
What are the causes of hypothyroidism?
Can hypothyroidism make you feel dizzy?
Can nausea be a symptom of hypothyroidism?
Can a sore throat be a sign of thyroid problems?
Why do I have hypothyroidism?
Can stress cause thyroid problems?
Can your thyroid alter your cholesterol?
What is the cause of high TSH levels?
Can hypothyroidism be cured?
How do you diagnose hypothyroidism?
What does it mean to have an underactive thyroid?
Which type of thyroid problem causes weight gain?
Now it's your turn:
References (Click to Expand)
About Dr. Westin Childs

We all know that this is a symptom of hypothyroidism, it's a classic symptom and one that is confirmed by every major and conventional establishment (2). But here is the interesting thing: If hypothyroidism causes weight gain, then why doesn't replacing thyroid hormone with Synthroid or levothyroxine cause weight loss? ( in the majority of patients)
Why is it that patients who have their thyroid taken out gain around 15-20 pounds on average despite being treated with thyroid hormone to a normal TSH? Either we don't really understand the true function of thyroid hormone in the body, or we don't understand how to replace thyroid hormone correctly... or both. I think it's really a combination of both and it's something I've explained in detail here . The truth is that thyroid hormone impacts other hormones in your body that directly regulate your fat cells and how your body burns fat. Thyroid hormone (T3 specifically) has a direct effect on hormones like leptin and insulin. Together these hormones determine how many calories you are going to burn, what your metabolism is going to be, and how your body will distribute and place fat on your body. Low levels of thyroid hormones potentiate a condition known as insulin resistance (3).

Levothyroxine Overdose: Recognize It & How to Treat It - Serenity at Summit Levothyroxine Overdose: Recognize It & How to Treat It
Levothyroxine Overdose: Recognize It & How to Treat It
Hypothyroidism & Levothyroxine
Is It Possible to Take Too Much Levothyroxine?
Other Causes of Overmedication
Misuse of Levothyroxine and Possible Overdose
Recognize Signs of an Overdose
Levothyroxine overdose symptoms usually consist of the following:
Concrete Ways to Help
Sources
 On September 2015, Sports Illustrated mentioned that anti-doping agencies in the United States and the United Kingdom lobbied for thyroid medications to be added to the list of banned substances by the World Anti-Doping Association. Athletes who have thyroid issues can use levothyroxine to combat normal feelings of fatigue. Doping agencies in the U.S. and United Kingdom felt that healthy athletes might misuse thyroid hormone replacement medications to improve their stamina. Hypothyroid and other thyroid complications often cause a person’s metabolism to slow down. When a person takes medication, they might lose weight as their metabolism normalizes. As such, some healthy people may use levothyroxine for weight loss or obesity despite warnings against this from the University of Michigan. MedlinePlus warns that people who take levothyroxine for weight loss despite having normal health subject themselves to toxic effects from this medication. The medication may not actually help a person lose weight. Recognize Signs of an Overdose
Even when not overdosing, people may experience chest pain or a faster heartbeat that also requires quick medical attention. Levothyroxine overdose symptoms usually consist of the following:

Levothyroxine Overdose: Recognize It & How to Treat It - Serenity at Summit

Levothyroxine Overdose: Recognize It & How to Treat It
Levothyroxine Overdose: Recognize It & How to Treat It
Hypothyroidism & Levothyroxine
Is It Possible to Take Too Much Levothyroxine?
Other Causes of Overmedication
Misuse of Levothyroxine and Possible Overdose
Recognize Signs of an Overdose
Levothyroxine overdose symptoms usually consist of the following:
Concrete Ways to Help
Sources

On September 2015, Sports Illustrated mentioned that anti-doping agencies in the United States and the United Kingdom lobbied for thyroid medications to be added to the list of banned substances by the World Anti-Doping Association. Athletes who have thyroid issues can use levothyroxine to combat normal feelings of fatigue. Doping agencies in the U.S. and United Kingdom felt that healthy athletes might misuse thyroid hormone replacement medications to improve their stamina. Hypothyroid and other thyroid complications often cause a person’s metabolism to slow down. When a person takes medication, they might lose weight as their metabolism normalizes. As such, some healthy people may use levothyroxine for weight loss or obesity despite warnings against this from the University of Michigan. MedlinePlus warns that people who take levothyroxine for weight loss despite having normal health subject themselves to toxic effects from this medication. The medication may not actually help a person lose weight. Recognize Signs of an Overdose
Even when not overdosing, people may experience chest pain or a faster heartbeat that also requires quick medical attention. Levothyroxine overdose symptoms usually consist of the following:

Synthroid (levothyroxine): Basics, Side Effects & Reviews
COMMON BRANDS
DRUG CLASS
CONTROLLED SUBSTANCE CLASSIFICATION
GENERIC STATUS
AVAILABILITY
What is Synthroid (levothyroxine)?
How Synthroid (levothyroxine) works
What is Synthroid (levothyroxine) used for?
Synthroid (levothyroxine) dosage forms
Typical dosing for Synthroid (levothyroxine)
Frequently asked questions about Synthroid (levothyroxine)
Pros and cons of Synthroid (levothyroxine)
Pros
Cons
Pharmacist tips for Synthroid (levothyroxine)
What are the side effects of Synthroid (levothyroxine)?
Common side effects
The following side effects have also been reported:
Less common
Rare
Symptoms of overdose
Less common
What are the risks and warnings for Synthroid (levothyroxine)?
NOT FOR WEIGHT LOSS
HEART PROBLEMS
ADRENAL CRISIS
WORSENING DIABETES
EFFECTS ON BONES
Interactions between Synthroid (levothyroxine) and other medications
What are people’s reviews of Synthroid (levothyroxine)?
How much does Synthroid (levothyroxine) cost?
Lowest GoodRx Price
Synthroid, Euthyrox, Levoxyl, Tirosint, Unithroid (brand)
$ 45.41
Lowest GoodRx Price
levothyroxine (generic)
$ 4.00
What is the latest news about Synthroid (levothyroxine)?
Synthroid (levothyroxine) images
 View More
What are the risks and warnings for Synthroid (levothyroxine)? Synthroid (levothyroxine) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options
NOT FOR WEIGHT LOSS
Risk factors: Taking other medications for weight loss
Synthroid (levothyroxine) shouldn't be used for weight loss. It’s not recommended, safe, or effective for this use. Taking high doses of Synthroid (levothyroxine) can cause serious or fatal effects especially if used with other medications for weight loss. HEART PROBLEMS
Risk factors: Current heart disease | Age 65 or older | Use of stimulant medications
Taking too much Synthroid (levothyroxine) can cause heart problems, especially for elderly people with heart conditions. Call your provider or get medical care right away if you have rapid or irregular heartbeat, chest pain, or shortness of breath.

View More
What are the risks and warnings for Synthroid (levothyroxine)? Synthroid (levothyroxine) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options
NOT FOR WEIGHT LOSS
Risk factors: Taking other medications for weight loss
Synthroid (levothyroxine) shouldn't be used for weight loss. It’s not recommended, safe, or effective for this use. Taking high doses of Synthroid (levothyroxine) can cause serious or fatal effects especially if used with other medications for weight loss. HEART PROBLEMS
Risk factors: Current heart disease | Age 65 or older | Use of stimulant medications
Taking too much Synthroid (levothyroxine) can cause heart problems, especially for elderly people with heart conditions. Call your provider or get medical care right away if you have rapid or irregular heartbeat, chest pain, or shortness of breath.

Levothyroxine: Uses, Side Effects & Interactions | MD-Health.com Levothyroxine: Uses, Side Effects & Interactions
Levothyroxine: Uses, Side Effects & Interactions
Levothyroxine is used to treat the effects of a failing thyroid. It's typically prescribed for life so work with a doctor to adjust your dose as necessary.
Indications and Usage
Levothyroxine Dosage
Levothyroxine Side Effects
Common Side Effects
Rare Side Effects
In Children and Pregnant or Breastfeeding Women
Who Should Not Take It
Interactions
 This medication will help replace the hormones that are absent from your system because they are not being secreted properly by the thyroid. This will help patients regulate their metabolism and energy level at a normal level. Though this medication can be used to help balance the hormones from your glandular system, it cannot assist in the management of any side effects of this condition, including hair loss or weight gain. Indications and Usage
Levothyroxine is more commonly known by the brand names Levothroid, Levoxyl, Unithroid, and Snythroid. These drugs are offered in tablet form and should be taken first thing in the morning. You will need to take your dose on an empty stomach to ensure that it is absorbed properly. Take your tablet with a full glass of water, as these are sticky and tend to get caught in the throat and may cause choking or gagging when swallowing. You should not stop taking levothyroxine without your doctor's knowledge and consent. Stopping this medication suddenly could lead to a withdrawal effect in the body, which amplifies your chances of developing side effects to the medication. It may take several weeks before you begin to see a change in your condition, so it is important that you take your medication regularly and do not alter your dosage until you have a chance to get an accurate rating of your condition.

Levothyroxine: Uses, Side Effects & Interactions | MD-Health.com

Levothyroxine: Uses, Side Effects & Interactions
Levothyroxine: Uses, Side Effects & Interactions
Levothyroxine is used to treat the effects of a failing thyroid. It's typically prescribed for life so work with a doctor to adjust your dose as necessary.
Indications and Usage
Levothyroxine Dosage
Levothyroxine Side Effects
Common Side Effects
Rare Side Effects
In Children and Pregnant or Breastfeeding Women
Who Should Not Take It
Interactions

This medication will help replace the hormones that are absent from your system because they are not being secreted properly by the thyroid. This will help patients regulate their metabolism and energy level at a normal level. Though this medication can be used to help balance the hormones from your glandular system, it cannot assist in the management of any side effects of this condition, including hair loss or weight gain. Indications and Usage
Levothyroxine is more commonly known by the brand names Levothroid, Levoxyl, Unithroid, and Snythroid. These drugs are offered in tablet form and should be taken first thing in the morning. You will need to take your dose on an empty stomach to ensure that it is absorbed properly. Take your tablet with a full glass of water, as these are sticky and tend to get caught in the throat and may cause choking or gagging when swallowing. You should not stop taking levothyroxine without your doctor's knowledge and consent. Stopping this medication suddenly could lead to a withdrawal effect in the body, which amplifies your chances of developing side effects to the medication. It may take several weeks before you begin to see a change in your condition, so it is important that you take your medication regularly and do not alter your dosage until you have a chance to get an accurate rating of your condition.

How to Use Liothyroinine (T3) in Hypothyroidism - Dr. Jeff Whelchel How to Use Liothyronine (T3) in Hypothyroidism
How to Use Liothyronine (T3) in Hypothyroidism
What is Liothyronine?
Liothyronine vs. Levothyroxine
Who Should Use Liothyronine?
What about Natural Dessicated Thyroid (NDT)?
Liothyronine for Weight Loss
Liothyronine for Depression
How to Raise T3 Levels
1. Naturally Increase T4 to T3 Conversion
2. Naturally Lower Reverse T3 Levels
3. Short-acting Liothyronine (Cytomel)
- Liothyronine/levothyroxine in Combination
- Liothyronine only
4. Sustained-Release (SR) T3
Liothyronine Side Effects
Summary
About the Author Dr. Jeff Whelchel
 If you are currently taking a T4 only medication (Synthroid, levothyroxine, or Tyrosint), changing to an NDT medication such as Armour Thyroid, NP Thyroid, or Nature-throid may be the easiest thing to try to increase your T3 level. In fact, that is usually the first thing I will do for patients. NDT is about 80% T4 and 20% T3. While that is certainly better than a medication with 100% T4, that may still be too much T4 which could result in a high level of reverse T3. If you are taking an NDT medication and your reverse T3 levels are too high and your free T3 levels are too low, you may need to reduce your NDT dose (at least temporarily) and add a small dose of liothyronine in order to "flush out" the reverse T3 which will allow the T3 levels to rise to optimal levels. Liothyronine for Weight Loss
Liothyronine may cause weight loss but it should NOT be used as a weight loss medication. If used for weight loss in patients without thyroid dysfunction, it could cause some unpleasant and even dangerous side effects. However, liothyronine may help with weight loss in patients with hypothyroidism. T3 may cause more weight loss than T4 because of how it interacts with fat cells and other hormones in the body. T3 directly increases mitochondrial energy production and increases thermogenesis and fat burning potential.

How to Use Liothyroinine (T3) in Hypothyroidism - Dr. Jeff Whelchel

How to Use Liothyronine (T3) in Hypothyroidism
How to Use Liothyronine (T3) in Hypothyroidism
What is Liothyronine?
Liothyronine vs. Levothyroxine
Who Should Use Liothyronine?
What about Natural Dessicated Thyroid (NDT)?
Liothyronine for Weight Loss
Liothyronine for Depression
How to Raise T3 Levels
1. Naturally Increase T4 to T3 Conversion
2. Naturally Lower Reverse T3 Levels
3. Short-acting Liothyronine (Cytomel)
- Liothyronine/levothyroxine in Combination
- Liothyronine only
4. Sustained-Release (SR) T3
Liothyronine Side Effects
Summary
About the Author Dr. Jeff Whelchel

If you are currently taking a T4 only medication (Synthroid, levothyroxine, or Tyrosint), changing to an NDT medication such as Armour Thyroid, NP Thyroid, or Nature-throid may be the easiest thing to try to increase your T3 level. In fact, that is usually the first thing I will do for patients. NDT is about 80% T4 and 20% T3. While that is certainly better than a medication with 100% T4, that may still be too much T4 which could result in a high level of reverse T3. If you are taking an NDT medication and your reverse T3 levels are too high and your free T3 levels are too low, you may need to reduce your NDT dose (at least temporarily) and add a small dose of liothyronine in order to "flush out" the reverse T3 which will allow the T3 levels to rise to optimal levels. Liothyronine for Weight Loss
Liothyronine may cause weight loss but it should NOT be used as a weight loss medication. If used for weight loss in patients without thyroid dysfunction, it could cause some unpleasant and even dangerous side effects. However, liothyronine may help with weight loss in patients with hypothyroidism. T3 may cause more weight loss than T4 because of how it interacts with fat cells and other hormones in the body. T3 directly increases mitochondrial energy production and increases thermogenesis and fat burning potential.

Does Cytomel Help with Weight Loss? Dosing guide + How to use it Does Cytomel Help with Weight Loss? Dosing guide + How to use it
Does Cytomel Help with Weight Loss? Dosing guide + How to use it
What is Cytomel & Why does it work so well?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
How to Calculate "Optimal" Free T4, Free T3, & Reverse T3 Ratio:
How Cytomel Causes Weight Loss
Should you take Cytomel?
Cytomel Dosage and How to Use it Safely
Cytomel vs Synthroid
Cytomel & T3 vs NDT
Sustained Release T3 (SR T3) vs Immediate Release T3
Cytomel Symptoms & Side Effects
Improving T4 to T3 Conversion with other Thyroid Medications
Cytomel Reviews & Case Studies
Conclusion
Have you used Cytomel successfully to lose weight?
Did it work for you?
Why or why not?
References (Click to Expand)
About Dr. Westin Childs
 Your thyroid helps control your metabolism and helps set your basal metabolic rate (2). What that means is your thyroid really helps to control your WEIGHT and the amount of fat you are burning on a daily basis. As many of you know: Low thyroid hormone = weight gain (one of the primary symptoms of Hypothyroidism)
But why doesn't that weight go away once you start taking Levothyroxine or T4 hormone? It has to do with the conversion process I mentioned above. If you give the body T4 hormone and it does NOT turn it into T3 then your cells will NOT get the thyroid hormone they need and your metabolism will STAY low. This benefit has been shown in at least one study (3). In this study, patients were given LT3 medication in place of their usual thyroid medication at equivalent doses and the researchers found that patients who switched experience an average of 4-5 pounds of weight loss without any other changes . These patients also experience an average reduction of 3-8% body fat . All of these were seen simply by changing the dose and without adding in any other therapies!

Does Cytomel Help with Weight Loss? Dosing guide + How to use it

Does Cytomel Help with Weight Loss? Dosing guide + How to use it
Does Cytomel Help with Weight Loss? Dosing guide + How to use it
What is Cytomel & Why does it work so well?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
How to Calculate "Optimal" Free T4, Free T3, & Reverse T3 Ratio:
How Cytomel Causes Weight Loss
Should you take Cytomel?
Cytomel Dosage and How to Use it Safely
Cytomel vs Synthroid
Cytomel & T3 vs NDT
Sustained Release T3 (SR T3) vs Immediate Release T3
Cytomel Symptoms & Side Effects
Improving T4 to T3 Conversion with other Thyroid Medications
Cytomel Reviews & Case Studies
Conclusion
Have you used Cytomel successfully to lose weight?
Did it work for you?
Why or why not?
References (Click to Expand)
About Dr. Westin Childs

Your thyroid helps control your metabolism and helps set your basal metabolic rate (2). What that means is your thyroid really helps to control your WEIGHT and the amount of fat you are burning on a daily basis. As many of you know: Low thyroid hormone = weight gain (one of the primary symptoms of Hypothyroidism)
But why doesn't that weight go away once you start taking Levothyroxine or T4 hormone? It has to do with the conversion process I mentioned above. If you give the body T4 hormone and it does NOT turn it into T3 then your cells will NOT get the thyroid hormone they need and your metabolism will STAY low. This benefit has been shown in at least one study (3). In this study, patients were given LT3 medication in place of their usual thyroid medication at equivalent doses and the researchers found that patients who switched experience an average of 4-5 pounds of weight loss without any other changes . These patients also experience an average reduction of 3-8% body fat . All of these were seen simply by changing the dose and without adding in any other therapies!

Tirosint Side Effects: Common, Severe, Long Term - Drugs.com Tirosint Side Effects
Tirosint Side Effects
For the Consumer
Warning
Side effects requiring immediate medical attention
Side effects not requiring immediate medical attention
For Healthcare Professionals
General
Cardiovascular
Endocrine
Nervous system
Dermatologic
Musculoskeletal
Gastrointestinal
Genitourinary
Hypersensitivity
Metabolic
Immunologic
Other
Psychiatric
References
Frequently asked questions
More about Tirosint (levothyroxine)
Consumer resources
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Further information
 Tablet; Solution)
Thyroid hormones, including levothyroxine, should not be used either alone or with other therapeutic agents for the treatment of obesity or weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction. Larger doses may produce serious or even life-threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects. Side effects requiring immediate medical attention
Along with its needed effects, levothyroxine (the active ingredient contained in Tirosint) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking levothyroxine: Less common
Chest pain or discomfort
decreased urine output
difficult or labored breathing
difficulty with swallowing
dilated neck veins
extreme fatigue
fainting
fast, slow, irregular, pounding, or racing heartbeat or pulse
fever
heat intolerance
hives or welts, skin itching, rash, or redness
irregular breathing
irritability
menstrual changes
nausea
pain or discomfort in the arms, jaw, back, or neck
sweating
swelling of the eyes, face, lips, throat, or tongue
tightness in the chest
tremors
Rare
Blurred or double vision
dizziness
eye pain
lack or slowing of normal growth in children
limp or walk favoring one leg
pain in the hip or knee
seizures
severe headache
Get emergency help immediately if any of the following symptoms of overdose occur while taking levothyroxine: Symptoms of overdose
Change in consciousness
cold, clammy skin
confusion
disorientation
fast or weak pulse
lightheadedness
loss of consciousness
sudden headache
sudden loss of coordination
sudden slurring of speech
Side effects not requiring immediate medical attention
Some side effects of levothyroxine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine.

Tirosint Side Effects: Common, Severe, Long Term - Drugs.com

Tirosint Side Effects
Tirosint Side Effects
For the Consumer
Warning
Side effects requiring immediate medical attention
Side effects not requiring immediate medical attention
For Healthcare Professionals
General
Cardiovascular
Endocrine
Nervous system
Dermatologic
Musculoskeletal
Gastrointestinal
Genitourinary
Hypersensitivity
Metabolic
Immunologic
Other
Psychiatric
References
Frequently asked questions
More about Tirosint (levothyroxine)
Consumer resources
Other brands
Professional resources
Related treatment guides
Further information

what are the Common Levothyroxine Side Effects? what are the Common Levothyroxine Side Effects?
what are the Common Levothyroxine Side Effects?
Jessica Reed
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 what are the Common Levothyroxine Side Effects? what are the Common Levothyroxine Side Effects? Jessica Reed
Last Modified Date: January 22, 2021
Jessica Reed
Date: January 22, 2021
Insomnia is one possible side effect of Levothyroxine. Levothyroxine side effects range from common, mild side effects including changes in appetite and weight change, upset stomach, insomnia, headache, and temporary hair loss to more serious side effects that require medical attention including chest pain, irregular heartbeat, or an allergic reaction. The medicine is intended to create a more normally functioning thyroid in patients whose thyroid glands do not produce the required amount of thyroid hormones. Hair loss is common with levothyroxine as the body adjusts to the new thyroid hormone levels, but this symptoms should resolve itself after two or three months of treatment. If it does not or the patient finds this side effect particularly distressing, she can consult her doctor for advice. A doctor should be consulted for persistent or severe side effects from taking levothyroxine..
Severe reactions include allergic reaction and problems including tightness or pain in the chest, difficulty breathing, or a rapidly beating heart.

what are the Common Levothyroxine Side Effects?

what are the Common Levothyroxine Side Effects?
what are the Common Levothyroxine Side Effects?
Jessica Reed
Is Amazon actually giving you the best price? This little known plugin reveals the answer.
📦Amazon Doesn't Want You to Know About This Plugin
Learn about a little known plugin that tells you if you're getting the best price on Amazon.

what are the Common Levothyroxine Side Effects? what are the Common Levothyroxine Side Effects? Jessica Reed
Last Modified Date: January 22, 2021
Jessica Reed
Date: January 22, 2021
Insomnia is one possible side effect of Levothyroxine. Levothyroxine side effects range from common, mild side effects including changes in appetite and weight change, upset stomach, insomnia, headache, and temporary hair loss to more serious side effects that require medical attention including chest pain, irregular heartbeat, or an allergic reaction. The medicine is intended to create a more normally functioning thyroid in patients whose thyroid glands do not produce the required amount of thyroid hormones. Hair loss is common with levothyroxine as the body adjusts to the new thyroid hormone levels, but this symptoms should resolve itself after two or three months of treatment. If it does not or the patient finds this side effect particularly distressing, she can consult her doctor for advice. A doctor should be consulted for persistent or severe side effects from taking levothyroxine..
Severe reactions include allergic reaction and problems including tightness or pain in the chest, difficulty breathing, or a rapidly beating heart.

How Methimazole May Cause Weight Gain & What to do About it How Methimazole May Cause Weight Gain & What to do About it
How Methimazole May Cause Weight Gain & What to do About it
What is Methimazole & How does it Work?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Methimazole Cause Weight Gain?
How Hyperthyroidism Can Paradoxically Lead to Weight Gain
How to Lose Weight with Hyperthyroidism
Wrapping it up
References (Click to Expand)
About Dr. Westin Childs
 But, on the other hand, we also want to balance thyroid hormone to prevent weight gain, depression and cholesterol issues ( all side effects and symptoms of hypothyroidism or an indication that your body is swinging from hyperthyroidism to hypothyroidism ). This balance may be difficult to achieve with Methimazole, but it is always worth attempting. Sometimes it may be possible to simply reduce your dosage which will allow some thyroid hormone activation and production in your body. A small change in your dose may be sufficient to restore some thyroid function (without causing the symptoms of hyperthyroidism) which can help manage your weight. As a reminder: Never alter your dose without consulting with your physician first! You may cause more harm than good if you adjust your medication in this way. How Hyperthyroidism Can Paradoxically Lead to Weight Gain
Is Methimazole the only hyperthyroid medication or therapy to cause weight gain? Not at all, in fact, most hyperthyroid therapies and medications will eventually lead to weight gain. It has been shown in studies that all treatments for hyperthyroidism result in "marked" weight gain (8).

How Methimazole May Cause Weight Gain & What to do About it

How Methimazole May Cause Weight Gain & What to do About it
How Methimazole May Cause Weight Gain & What to do About it
What is Methimazole & How does it Work?
Download my Free Resources:
Foods to Avoid if you have Thyroid Problems:
The Complete List of Thyroid Lab Tests:
Does Methimazole Cause Weight Gain?
How Hyperthyroidism Can Paradoxically Lead to Weight Gain
How to Lose Weight with Hyperthyroidism
Wrapping it up
References (Click to Expand)
About Dr. Westin Childs

But, on the other hand, we also want to balance thyroid hormone to prevent weight gain, depression and cholesterol issues ( all side effects and symptoms of hypothyroidism or an indication that your body is swinging from hyperthyroidism to hypothyroidism ). This balance may be difficult to achieve with Methimazole, but it is always worth attempting. Sometimes it may be possible to simply reduce your dosage which will allow some thyroid hormone activation and production in your body. A small change in your dose may be sufficient to restore some thyroid function (without causing the symptoms of hyperthyroidism) which can help manage your weight. As a reminder: Never alter your dose without consulting with your physician first! You may cause more harm than good if you adjust your medication in this way. How Hyperthyroidism Can Paradoxically Lead to Weight Gain
Is Methimazole the only hyperthyroid medication or therapy to cause weight gain? Not at all, in fact, most hyperthyroid therapies and medications will eventually lead to weight gain. It has been shown in studies that all treatments for hyperthyroidism result in "marked" weight gain (8).