In people with hyperthyroidism, the thyroid gland produces too much hormone. Tapazole® (methimazole), a prescription drug, is used to treat this condition. The medicine comes in the form of a tablet and is typically taken three times a day. Possible side effects include headache, nausea, and hair loss; however, most people tolerate it well.
The medicine disrupts the production of thyroid hormone by preventing the oxidation of iodine; however, it does not affect hormones that are already circulating in the bloodstream. Because Tapazole may not be suitable for everyone, talk to your healthcare provider before starting treatment to make sure this drug is right for you. Your healthcare provider will need information on the medications you are currently taking (including nonprescription drugs and supplements) and whether you have any other medical conditions.
(For more information on this drug, click Tapazole. Topics discussed in this article include other things to discuss with your healthcare provider, what to expect in the case of an overdose, and what to do if you miss a dose.)
Written by/reviewed by: Arthur Schoenstadt, MD
Last reviewed by: ArthurSchoenstadt, MD
List of references (click here):
Tapazole [package insert]. Bristol, TN: King Pharmaceuticals, Inc.;2006 July.
Lexi-Drugs, comp + specialties [computer program]. Lexi-Comp, Inc.; November 12,
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed November 11, 2009.
Briggs GG, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 8th ed. Philadelphia (PA): Lippincott Williams & Wilkins;2008.
National Library of Medicine (US). Drugs and Lactation Database (LactMED). NLM Web site. Available at: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT. Accessed November 11, 2009.
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