*This statement summarizes the third USPSTF recommendations for screening for chlamydial infection and the supporting scientific evidence, and it updates the 1995 recommendations contained in the Guide to Clinical Preventive Services, second edition (1).
What are the possible side effects of levothyroxine (Levothroid, Levoxyl, Synthroid, Tirosint, Unithroid)? Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have a serious side effect such as: headache;
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.