What is Masteron (Drostanolone Propionate) 100mg? Masteron (Drostanolone Propionate) 100 mg is an androgen & anabolic steroid (AAS) initially developed to treat breast cancer in women, though its medical use has diminished. However, Masteron has gained popularity in the bodybuilding community because of its muscle-building properties. Masteron is derived from dihydrotestosterone a... https://www.yourmuscleshop.to/