21 C.F.R. § 201.316 Drugs with thyroid hormone activity for human use; required warning.
Title 21 - Food and Drugs
(a) Drugs with thyroid hormone activity have been promoted for, and continue to be dispensed and prescribed for, use in the treatment of obesity, although their safety and effectiveness for that use have never been established. (b) Drugs for human use with thyroid hormone activity are misbranded within the meaning of section 502 of the Federal Food, Drug, and Cosmetic Act unless their labeling bears the following boxed warning at the beginning of the “Warnings” section: Drugs with thyroid hormone activity, alone or together with other therapeutic agents, have been used for the treatment of obesity. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction. Larger doses may produce serious or even life-threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects. [43 FR 22009, May 23, 1978]
Title 21: Food and Drugs
PART 201—LABELING
Subpart G—Specific Labeling Requirements for Specific Drug Products
§ 201.316 Drugs with thyroid hormone activity for human use; required warning.
