The primobolan (trade name of the active ingredient Metenolone) is an anabolic-androgenic steroid. Physicians prescribe it to treat anemia caused by bone marrow failure, while athletes value its anti-catabolic properties and relative safety.

Chemical Properties of Metenolone and Primobolan

metenolone primobolan
Primobolan Acetate and Primobolan Enanthate

The metenolone (hormone of primobolan precisely) is, like Masteron, a DHT derivative. It lacks estrogenic activity and has very low progestinic activity. Primobolan has a mild anabolic effect that supports solid, lean muscle mass over time with very few side effects.

Researchers developed metenolone as an acetate ester that acts very quickly. Athletes in the 1960s and 1970s injected Primobolan acetate during competition season for performance. Authorities soon banned and removed Primobolan acetate from the market, even as a therapeutic drug. Only Primobolan Enanthate remains available for medical use and doping purposes.

Bodybuilding Uses for Primobolan

Maybe it hasn’t been used all that much here in Europe, but the Primobolan enanthate is probably the most popular steroid It is highly regarded by bodybuilders around the world. As mentioned earlier, when combined with other steroids (such as testosterone, for example), it guarantees solid muscle gains—slow and modest but steady and clean—to the point that it is used both off-season and during contest preparation (since it is a very dry steroid) with truly excellent results. All this comes with virtually no side effects and extremely high tolerability by the human body.

But if it is so powerful, effective, and tolerable, why isn’t it used by all athletes?

Reasons for Limited Primobolan Popularity

There are essentially two problems, one stemming from the other. Methenolone (Primobolan) is truly excellent, highly effective, and very well tolerated by our metabolism… but at a cost: the price! Primobolan is probably the most expensive steroid per milligram, and you need a lot of it (and for a long time) to maximize its results. And this leads to another problem: because of its high price and the long time it takes to see results, Primobolan is probably the most counterfeited steroid out there. In fact, it often happens that unlicensed labs sell Masteron as Primobolan, or falsify the dosages, or—believe it or not—sell nothing but sterile oil!