Thyrolar (Liotrix) Drug Information: Description, User Reviews, Drug Side Effects, Interactions

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May 26, 2012

Thyrolar

Hypothyroidism »

What is hypothyroidism?

Hypothyroidism is a condition characterized by abnormally low thyroid hormone production. There are many disorders that result in hypothyroidism. These disorders may directly or indirectly involve the thyroid gland. Because thyroid hormone affects growth, development, and many cellular processes, inadequate thyroid hormone has widespread consequences for the body.

This article will focus specifically on hypothyroidism in adults.

What are thyroid hormones?

Thyroid hormones are produced by the thyroid gland. This gland is located in the lower part of the neck, below the Adam's apple. The gland wraps around the windpipe (trachea) and has a shape that is similar to a butterfly - formed by two wings (lobes) and attached by a middle part (isthmus).

The thyroid gland uses iodine (mostly available from the diet in foods such as seafood, bread, and salt) to produce thyroid hormones....

Read the Hypothyroidism article »

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Thyrolar® Tablets
(liotrix) Tablets, USP

DRUG DESCRIPTION

Thyrolar Tablets (Liotrix Tablets, USP) contain triiodothyronine (T₃ liothyronine) sodium and tetraiodothyronine (T₄levothyroxine) sodium in the amounts listed in the "How Supplied" section. (T₃ liothyronine sodium is approximately four times as potent as T₄thyroxine on a microgram for microgram basis.)

The inactive ingredients are calcium phosphate, colloidal silicon dioxide, corn starch, lactose, and magnesium stearate. The tablets also contain the following dyes: Thyrolar (liotrix) 1/4 - FD&C Blue #1 and FD&C Red #40; Thyrolar (liotrix) ½ - FD&C Red #40 and D&C Yellow #10; Thyrolar (liotrix) 1 - FD&C Red #40; Thyrolar (liotrix) 2 - FD&C Blue #1, FD&C Red #40, and D&C Yellow #10; Thyrolar (liotrix) 3 - FD&C Red #40 and D&C Yellow #10.

STRUCTURAL FORMULAS

Thyrolar (T3 liothyronine and T4 levothyroxine) structural formula illustration

What are the precautions when taking liotrix (Thyrolar)?

Before taking liotrix, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: increased thyroid hormones (thyrotoxicosis), a heart attack (acute myocardial infarction), adrenal gland problem (e.g., uncorrected adrenal insufficiency).

Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart disease (e.g., coronary artery disease, irregular heartbeat), high blood pressure, diabetes, other hormone...

Read All Potential Precautions of Thyrolar »

Last reviewed on RxList: 5/7/2009
This monograph has been modified to include the generic and brand name in many instances.