I.MAST (masterone propionate, drostanolone) is an injectable anabolic steroid, a derivative of DHT, with a pronounced anabolic effect and relatively low androgenic effect, and is not aromatic.
Drostanolone was invented in 1959, and 10 years later appeared on the market.
The exact androgenic and anabolic activity of masterone is not known; empirically, it is definitely stronger than primobolan and similar to stanazolol. The efficiency of I.MAST is quite good, and it is often used as a second drug on a dry run. Less common than stanazolol, but it has a lot of advantages compared to primobolan. Less toxic on the liver, since there is no 17-alpha-alkerion group, and there is no negative effect on the joint-ligament apparatus.
It is also used as a drug to reduce hGH. Due to the fact that masterone is a derivative of DHT, it has the properties of reducing hGH, which in turn increases the amount of free testosterone. That is why masterone is used not only on drying, but also on gaining muscle mass as the second or third-fourth drug.
- Androgenic activity: unknown
- Anabolic activity: unknown
- Aromatization: none
- Progestrogenic activity: none
- Toxicity: moderate
- Half-life: 1-2 days
- Increases protein synthesis
- Increases appetite
- Burns fat
- Has a diuretic effect
- Increase in LDL
- Increased red blood cell count and hemoglobin
Recommended working doses
200-350 mg per week.
400-600 mg weekly. The drug is more often used only in competitive bodybuilding in preparation for competitions directly on the lean.