Masteron is the trade name for the anabolic steroid Drostanolone. Drostanolone (Drostanolone Propionate, Enanthate, or Masteron) is an oil-based injectable anabolic steroid derived from dihydrotestosterone (DHT). In fact, all anabolic analogies and steroid derivatives are modifications of one or another of the three primary anabolic steroids found naturally in all humans: testosterone, dihydrotestosterone, and nandrolone. Other anabolic steroids in this DHT-derived family include Anavar, Winstrol, drostanolon, Primobolan, and others. Masteron is not considered a very strong anabolic steroid, but it is not a weak one. Its anabolic strength is generally considered moderate at best (anabolic score 62 - 130), and its androgenic strength is quite low (25-40). This demonstrates a dramatic difference compared to testosterone, which is the number one natural and original anabolic steroid, and is used as a reference measuring bar against which all other anabolic steroids are compared and measured. Testosterone in comparison has anabolic and androgenic activity equal to 100 for both, respectively.

The origin of this compound is quite interesting, as Syntex synthesized and developed this anabolic steroid. Syntex is also known for developing other popular anabolic steroids such as Anadrol and Methyldrostanolone (AKA Superdrol).