FDA Warns Consumers About Thyroid Hormone Supplement

November 22, 2000

2 Min Read
FDA Warns Consumers About Thyroid Hormone Supplement

WASHINGTON--The Food and Drug Administration (FDA) on Nov. 21 issued a consumer warning about products marketed as dietary supplements that contain a thyroid hormone known as tiratricol. It warned that the tiratricol product can cause serious health concerns including heart attack and stroke. FDA originally issued a warning on the product in November 1999, targeting Syntrax Innovations in Cape Giradeau, Mo., for its sale of Triac.

According to information from Syntrax's Web site, Triac is a "naturally occurring degradation product" of the thyroid hormone T3 (levo-Triiodothyronine) and has been sold as a fat loss drug in many countries around the world. A consumer service rep from Syntrax could not comment on the product or FDA's actions, except to note that it no longer sells Triac.

Despite three product recalls in April 2000, and another one in September 2000 from four different manufacturers, FDA said it believed that products containing tiratricol may have reached consumers. When contacted at press time, FDA had no information regarding the number or type of adverse events associated with tiratricol that had been reported to FDA; an agency spokesperson noted that any number of events is considered cause for action. FDA is urging consumers to consult their health care provider if they have been taking the product and are experiencing any adverse effects, which may include insomnia, sweating and diarrhea.

John Hathcock, director of scientific affairs with the Council for Responsible Nutrition, noted that CRN was monitoring the situation to ensure that FDA was working through the proper regulatory channels and using reasonable safety standards for the recall. However, he added, he was not aware of any CRN members selling the product, and thought it was really a rather minor product in the overall marketplace.

For more information, visit www.fda.gov.

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