Westhroid

Westhroid™
(Thyroid USP) Tablets

DRUG DESCRIPTION

Westhroid™ (Thyroid USP) Tablets, micro-coated, easy to swallow with a reduced odor, for oral use are natural preparations derived from porcine thyroid glands (T3 liothyronine is approximately four times as potent as T4 levothyroxine on a microgram for microgram basis). They provide 38 mcg levothyroxine (T4) and 9 mcg liothyronine (T3) for each 65 mg (1 Grain) of the labeled content of thyroid.

Inactive Ingredients

Colloidal Silicon Dioxide, Dicalcium Phosphate, Lactose Monohydrate*, Magnesium Stearate, Microcrystalline Cellulose, Croscarmellose Sodium, Stearic Acid, Opadry II 85F19316 Clear.

The structural formulas of liothyronine (T3) and levothyroxine (T4) are as follows:

Liothyronine  and levothyroxine Structural Formula Illustration

*Present in traceable amount as part of Thyroid USP (diluent)

Last reviewed on RxList: 11/27/2013
This monograph has been modified to include the generic and brand name in many instances.

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