What Are The Side Effects Of Cytomel?

Cytomel is a prescription form of the thyroid hormone liothyronine. It is used to treat hypothyroidism, a condition in which the thyroid does not produce sufficient thyroid hormone. Liothyronine is required for a number of normal bodily functions and without it, the body fails to grow and maintain itself properly. Cytomel is also used in the treatment of enlargements of the thyroid gland called goiters. A number of side effects, some life-threatening, can occur with Cytomel use.

Sweating

Excessive sweating may be a side effect of Cytomel, according to a U.S. Food and Drug Administration website, Drugs.com. Patients who experience this side effect should seek medical attention as this can indicate a life-threatening condition. Other related side effects include chest pain, breathing problems and an inability to tolerate hot or warm temperatures. Consult a physician about any of these side effects.

Seizures

Though neurological side effects are rare in response to Cytomel, some patients have reported seizures while beginning treatment. Drugs.com explains that twitching occurs in about 1 percent of patients who are treated for myxedema coma, a specific type of coma that results from low levels of thyroid hormone.

Hair Loss

Cytomel may lead to partial, temporary hair loss is children. While this is a troublesome complication, it is usually just a minor side effect that should subside with time.

Changes in Cardiac Rhythm

According to Drugs.com, about 6 percent of Cytomel users will experience arrythmias, 3 percent will have tachycardia, or a racing heart rate. More severe cardiac side effects of Cytomel are rare but have been reported. These include chest pain, heart attack and congestive heart failure.

Musculoskeletal Problems

Cytomel may lead to changes in bone mineral density and may be associated with increased risk of osteoporosis. Drugs.com explains that women using Cytomel have been found to have significantly lower bone mineral densities. Men taking Cytomel have an increased rate of thigh bone, or femur, fracture than men not on thyroid therapies.