Drostanolone (brand names Masteron, Drolban, Metormon, Permastril, Mastager, etc.) is an anabolic steroid that is available in the form of propionate and enanthate esters. Masteron has moderate androgenic activity and high anabolic effects. Masteron does not aromatize in the body (i.e., it does not convert to estrogens); on the contrary, it is an aromatase inhibitor. Drostanolone is similar in biological action to dihydrotestosterone, as it is a derivative of this hormone (the chemical formula of Masteron is 2a-methyl-dihydro-testosterone propionate). In medicine, Masteron is used as a treatment for breast cancer in women, but due to the high probability of virilization, it is currently rarely used.
Masteron is popular in bodybuilding because it does not cause fluid retention and has a moderate diuretic effect, which improves muscle relief and definition. Drostanolone may be of interest to athletes who want to increase muscle hardness and density; it is usually used shortly before competitions. Drostanolone allows you to achieve the most expressive muscle condition, which is also due to the fat-burning effect of the drug. Practice shows that a Masteron course can reduce fat mass by 5-7% of the initial amount.
