Masteron, also known as Drostanolone Propionate, is a synthetic anabolic-androgenic steroid derived from dihydrotestosterone (DHT). It is characterized by its non-aromatizing properties, meaning it does not convert into estrogen through the aromatase enzyme. This distinctive characteristic differentiates Masteron from many testosterone-derived anabolic compounds. Drostanolone has androgenic and anabolic activity and has historically been investigated for its anti-estrogenic properties in clinical settings. Its pharmacological profile is associated with androgen receptor activation and changes in muscle composition. The propionate ester provides a relatively short release profile compared with longer-acting steroid esters. Potential adverse effects include suppression of natural testosterone production, changes in cholesterol levels, acne, hair loss in genetically susceptible individuals, and cardiovascular complications.