BlackShark Mast P 100

Masteron, also known by its chemical name Drostanolone, is a dihydrotestosterone (DHT)-derived anabolic steroid best known for its dry, hardening effects and low risk of estrogenic side effects. Originally developed to treat breast cancer, Masteron has since become a favorite among physique athletes for its ability to sharpen muscle definition, enhance vascularity, and preserve lean mass during a cutting phase.

But while it’s often marketed as a "mild steroid," Masteron is still a powerful compound — and beginners should understand its mechanism, benefits, side effects, and safe usage before running a cycle.