July 27, 2016
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Westhroid

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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.

Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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