Masteron, otherwise known as drostanolone propionate, regularly comes 100 mg. in a 2 cc ampule. Masteron is a synthetic derivative of dihydrotestosterone which keeps Masteron from aromatizing at any dosage. This means no gyno since it will not be converted into estrogens. Masteron is a strong androgenic steroid that has anti-estrogenic characteristics. For bodybuilders at a very low fat level, Masteron will add a dramatic hardness and sharpness to your muscles. Masteron is most commonly used as a precontest steroid but it will work as a mass steroid as well. This steroid will only show up on a drug test for 10-11 days after administering it as well. It also has the tendency not to cause water retention either. Side effects are kept to a minimum while on Masteron as well. It will not cause liver damage and since it will not aromatize, gyno is not a problem either. The main side effects are the normal ones like acne and accelerated hair loss since it is a derivative of DHT. It would be wise to use Nizoral shampoo while taking any DHT derivatives to keep this at a minimum.