2a,3a-Epithio-17a-Methyl-5a-Androstan-17b-Ol - Glossary


An anabolic “supplement” compound sold under various names (Havoc, Epistane, Hemaguno). It’s a methylated, orally-bioavailable version of a steroidal, anti-estrogenic drug, Epitiostanol, which was originally developed in Japan.  Epitiostanol is also the parent compound of an illegal anabolic steroid: Mepitiostane (2a, 3a-epithio-5-androstan-17b-yl-1-methoxycyclopentyl ether).

May also be written as 2a,3a-epithio-17a-methyletioallocholanol. While it’s currently being sold on the open market, 2a,3a-epithio-17a-methyl-5a-androstan-17b-ol is of dubious legality, and unlikely to withstand FDA scrutiny.

Author: elissa

Elissa is a former research associate with the University of California at Davis, and the author/co-author of over a dozen articles published in scientific journals. Currently a freelance writer and researcher, Elissa brings her multidisciplinary education and training to her writing on nutrition and supplements.

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