Information, Symptoms, Treatments and Resources



Common Brand Name(s): Cytomel
Phonetic Pronunciation: (lye-oh-THYE-roe-neen)
Information last revised May 2010

What does LIOTHYRONINE - ORAL look like?

Par02201liothyronine 5 mcg Tab
Myn36120liothyronine 25 mcg Tab
Pad02220liothyronine 25 mcg Tab
Myn36130liothyronine 50 mcg Tab
Pad02230liothyronine 50 mcg Tab
Myn36110liothyronine 5 mcg Tab


Liothyronine is used to treat underactive thyroid (hypothyroidism). It replaces a hormone that is normally produced by the thyroid gland. Low thyroid levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. It is important to have adequate levels of thyroid hormone in your bloodstream to maintain normal mental and physical activity. This medication is also used to lower thyroid function in certain diseases such as enlarged thyroid gland (goiter) and Hashimoto's thyroiditis. It is also used to test thyroid activity. Liothyronine is a man-made hormone that replaces the body's natural thyroid hormone (T3).
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