Category: hormone
Aliases: Masteron, drostanolone propionate, dromostanolone
2α-methyl dihydrotestosterone derivative; a DHT-class AR agonist that cannot aromatize (no estrogenic activity) and is not further 5α-reduced. Moderately anabolic, distinctly androgenic, with mild anti-estrogenic action (historically used in breast cancer). Abused for a "hard/dry" cosmetic look; androgenic side effects (hair loss, virilization) are prominent.