MASTEDRA 10ml 100mg (Dragon Pharma) is a steroid highly valued by competing bodybuilders. The great popularity of this injectable steroid in bodybuilder circles is due to the extraordinary characteristics of its included substance. Drostanolone propionate is a synthetic derivative of dihydrotestosterone. This causes the Drostanolone Propionate (Masteron) not to aromatize in any dosage and thus, it cannot be converted into estrogens. This distinctive feature is confirmed by the Belgian manufacturer, Sarva Syntex (no more in production), who on the enclosed package insert calls Drostanolone Propionate (Masteron) a steroid with strong, antiestrogenic characteristics. Genesis have production in 10ml bottle 50mg/ml. Since Drostanolone Propionate (Masteron) is a predominantly androgenic steroid, the athlete can increase his androgen level without also risking an increase in his estrogen level.