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FDA Bans Designer Steroid THG
The Steroid Tetrahydrogestrinone (THG) Called Unapproved Drug

By Elizabeth Quinn, About.com

Updated: February 25, 2008

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

The Food and Drug Administration (FDA) has recently listed tetrahydrogestrinone (THG) as an unapproved drug, and has said it can not be legally marketed in the United States. The FDA is concerned about use of this unapproved product. They warn consumers that little is known about the safety of this drug its use may pose considerable risks to health

It is considered a "designer" synthetic steroid derived by chemical modification from another anabolic steroid that is banned by the U.S. Anti-Doping Agency. THG is structurally related to two other synthetic anabolic steroids, gestrinone and trenbolone. Anabolic steroids, which build muscle mass, can have serious long-term health consequences in men, women, and children.

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