Masteron, otherwise known as drostanolone propionate.

 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.
Masteron, or drostanolone propionate is a derivative of DHT (dihydrotestosterone), and therefore. Competing bodybuilders find this extremely beneficial because aromatization typically causes excess water retention which may give the muscles a smooth appearance.

Another advantage of Masteron is its strong androgenic component. The androgenic effect of this steroid can cause a noticeable improvement in muscle density and hardness which can help the bodybuilder obtain the "ripped" look if his bodyfat percentage is low enough. The androgenic effect is also crucial because it helps to provide sufficent "kick" or "drive" for intense training when an athlete has lowered his caloric intake for contest preparation.

Masteron can also be used successfully by bodybuilders preparing for a drug-tested show. The substance drostanolone propionate is fast acting and quickly broken down. The athlete can therefore use Masteron up to about ten days before a drug test. The average dosage of Masteron is 100 mg injected every other day. It is best to inject Masteron every 2-3 days because it has a short duration of effect. Popular steroids stacked with Masteron include Parabolan (trenbolone hexahydrobencylcarbonate), Winstrol (stanozolol), and oxandrolone. Athletes rarely experience any side effects with this steroid. Masteron is not hepatoxic, and gynecomastia should not be a concern since it does not convert into estrogen. Some possible masteron drostanolone propionate side effects include acne, accelerated hair loss, and increased aggression.