Symptoms of an overactive thyroid gland are generally symptoms of an increased metabolism. These can include weight loss, nervousness or anxiety, irritability, a racing heart, increased bowel movements, sweating, sleeplessness, hand tremors, and muscle weakness.1  Previous.2  Continue.n addition to fatigue and weight gain, symptoms can include depression, constipation, sluggishness, dry skin and dry hair, and muscle cramps. Some people develop an enlarged thyroid, which leads to a swelling in the front of the neck known as a goiter.. 1  Previous.
Examples of oils containing Phenols â Wintergreen, Anise, Birch, Clove, Basil, Tarragon, Fennel, Oregano, Thyme, Mountain Savory, Peppermint, Tea Tree, Calamus, Cinnamon Bark, Citronella, Marjoram, Nutmeg, Eucalyptus citriodora, Parsley, Ylang Ylang. These all contain greater than 8% phenols.
Esters are found in lavender, chamomile, bergamot and sage. Phenols are another common chemical found in most aromatherapy oils. Phenols are powerful antibacterials. They warm the skin and stimulate blood flow. Because of their heating action, oils containing phenols should be used in small amounts. Basil, clove, thyme and oregano oils contain phenols. Ketones promote new cell growth and help wounds heal faster and they're found in rosemary, camphor, sage and eucalyptus. Alcohols act as diuretics; they kill bacteria, energize and stimulate the body.