Drostanolone (trade names Masteron, Drolban, Metormon, Permastril, etc.) is an anabolic steroid that is released as esters propionate and enanthate. Masteron has a high androgenic activity and moderate anabolic effect. Masteron does not aromatize in the body (that is, does not convert to estrogens), on the contrary it is an aromatase inhibitor. Drostanolone is similar in biological effect to dihydrotestosterone, since it is a derivative of this hormone (the chemical formula of Masteron is 2a-methyl-dihydro-testosterone propionate). In medicine, Masteron is used as an agent for the treatment of breast cancer in women  , however, due to the high probability of virilization, it is practically not used at present.
Drostanolone is usually issued in ampoules of 50 and 100 mg / ml.
Doronostanolum propionate is widely used by athletes in bodybuilding, to preserve muscle mass and strength during the cycles of “drying.” Drostanolone is often used by runners and athletes, who tend to keep the weight category (without increasing body weight).
Masteron is popular in bodybuilding, as it does not cause fluid accumulation and has a moderate diuretic effect, it allows to improve the relief and definition of muscles. Drostanolone may be of interest to those athletes who wish to increase the hardness and density of the musculature, as a rule it is used shortly before the competition. Drostanolone allows you to achieve the most expressive state of the muscles, this also occurs due to the fat burning effect of the drug. Practice shows that Masteron’s course can reduce fat mass by 5-7% from the initial one.