Drostanolone propionate

Masteron was developed in 1959 by Synex. Masteron is a moderately powerful anabolic and is not able to aromatase into estrogen. It was highly popular in the 1970’s and 80’s among athletes, but commercially it was soon replaced by better therapies for breast cancer. It is one of the key steroids used during competition preparation and an essential component in your stack if you are looking for that dry and shredded look bodybuilders have on stage. When examining this drug’s properties it’s not hard to see why this drug is so vital during the time leading up to a show.

One thing that stands out is the ability to act as an anti-estrogen. This is not unique to Masteron though and Proviron shows similar effects. It’s also popular among athletes that require retaining strength while losing mass. It is beneficial to runners and athletes who must remain in a certain weight class.