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Thyroid Hormone Replacement Drugs
Approximate Equivalent Strengths Chart

from Mary Shomon,
Your Guide to Thyroid Disease

The following chart outlines the approximate equivalent strengths of various thyroid hormone replacement drugs, including Armour Thyroid, Thryolar, Cytomel, Synthroid, Levoxyl, and other levothyroxine drugs.




MORE INFORMATION ON THYROID DRUGS

Last Updated: February 2006.

Mary Shomon, About.com's Thyroid Guide since 1997, is a nationally-known patient advocate and best-selling author of 10 books on health, including "The Thyroid Diet: Manage Your Metabolism for Lasting Weight Loss," "Living Well With Hypothyroidism: What Your Doctor Doesn't Tell You...That You Need to Know," "Living Well With Graves' Disease and Hyperthyroidism," "Living Well With Autoimmune Disease," "Living Well With Chronic Fatigue Syndrome and Fibromyalgia," and the "Thyroid Guide to Fertility, Pregnancy and Breastfeeding Success." Click here for more information on Mary Shomon.

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