Skyblue International

Drostanolone propionate (often sold as “Mastprop 100 mg”) is an injectable anabolic-androgenic steroid derived from dihydrotestosterone (DHT). It is primarily used in medical settings to treat certain cases of breast cancer in women, where it helps slow tumor growth by altering hormone balance. The drug has strong androgenic and moderate anabolic effects, meaning it can influence muscle hardness and physical appearance, which is why it has also been misused in bodybuilding for cutting cycles. However, non-medical use carries significant risks, including hormonal imbalance, liver strain, cardiovascular issues, mood changes, and suppression of natural testosterone production.