1-Androstenediol, or 5ñ-androst-1-ene-3ò,17ò-diol, also known as 4,5ñ-dihydro-ô-4-androstenediol, is a prohormone of 1-testosterone (ÃÂ-). It has been used as a dietary supplement, and is identified by the World Anti-Doping Agency as a prohibited substance related to anabolic steroids.