Halotestin (fluoxymesterone) is a halogenated derivative of 17-alpha-methyltestosterone. Contrary to what one might expect, Halotestin has poor binding to the Androgen Receptor (AR). Presumably the effects of fluoxymesterone are largely non-AR mediated. Halotestin, however, is a rather toxic drug and I consider it to be a poor choice except perhaps pre-contest for those willing to suffer its toxicity, or for endurance athletes in non-tested competitions.
Fluoxymesterone is the chemical name of active ingredient in Halotestin. Halotestin is a registered trademark of Pharmacia & Upjohn Company in the United States and/or other countries.
About the author
Bill Roberts is an internationally-recognized expert on anabolic steroids and performance-enhancing drugs (PEDs). He received a bachelor degree in Microbiology and Cell Science and completed the educational and research requirements for a PhD in Medicinal Chemistry at a major American university.
Bill entered the nutritional supplement industry prior to completing his doctoral thesis but his education was invaluable so far as being able to design/improve nutritional supplement compounds, since it was in the field of designing drug molecules and secondarily some work in transdermal delivery.
His education was not specifically "geared" toward anabolic steroids other than expertise with pharmacological principles having broad applications. This has allowed Bill to provide unique insight into the field of anabolic pharmacology with knowledge of points which he would not have known otherwise.