Within bodybuilding, weight lifting and other sports communities, the use of Drostanolone propionate is valued for its assistance in building harder muscle mass and increasing overall muscle density. As a result, the androgenic steroid is particularly desirable among individuals looking to improve their overall muscular strength without “bulking up” excessively or increasing muscle mass. In addition, the use of Drostanolone propionate is popular among bodybuilding enthusiasts, as regular use of the steroid can create a more chiseled physique by helping to build denser musculature.
Estrogen, which is the main enemy of breast cancer patients, is curbed through SERM and AI. Master also shares these characteristics and is capable of preventing estrogen buildup in the body. As DHT derivative, it does not allow aromatization and displays strong anti-aromatase properties. For this reason, Masteron has been used in combination with other drugs to treat breast cancer patients. The role of Masteron then was to block the amount of estrogens in the body while other drugs, such as Tamoxifen-citrate were used to block the binding of estrogen at the breast receptors. Today, many other more powerful aromatase inhibitors have replaced this breast cancer treatment to achieve even greater success in the fight against breast cancer.
Having said this, Masteron when initially produced pharmacologically, was seen by the FDA as a relatively safe medicine, even at high dosages. Dosages in excess of 150mg per day (that's over 1000mg per week) were considered as safe limits by the FDA (bear in mind most other AAS used by athletes are used in levels that exceed FDA safe limits). This is good news to the user, however do not misinterpret this information as a reason to use excessive doses of Masteron as in reality anything above 600mg per week is not going to give any more benefit than 500-600mg per week would give, thus excessive use would be a waste of money and injections.