Drostanolone Propionate, often sold under brand names like Masteron, is an anabolic-androgenic steroid (AAS) derived from dihydrotestosterone (DHT). Medical usesHistorically, Drostanolone Propionate was used to treat breast cancer in women due to its anti-estrogenic effects, helping to reduce estrogen levels. It was administered by intramuscular injection. However, it is no longer marketed for this purpose. Non-medical uses and bodybuilding Drostanolone Propionate is also used in bodybuilding and athletics to improve physique and performance.