Primobolan (trade name of the active ingredient Metenolone) is an anabolic androgenic steroid. In medicine, it is used in particular to treat anemia caused by bone marrow failure, while in sports it is used for its anti-catabolic qualities and relative safety of use.

Chemical information on Metenolone – Primobolan

Metenolone (Primobolan, to be precise) is, like Masteron, a derivative of DHT and as such has no estrogenic activity and very low (if any) progestogenic activity. Primobolan has an anabolic effect, but it is mild and, when combined with other steroids, can ensure the development of solid lean muscle tissue over time with very low, if any, side effects.

Methenolone was originally produced with an acetate ester (very fast-acting) and in the 1960s and 1970s, athletes used to inject Primobolan acetate during the competition period to enhance their performance. Immediately after this, primobolan acetate was banned and removed from the market, even as a therapeutic drug. In fact, only Primobolan Enanthate is currently available for therapeutic use and also for sports use – "doping."

Applications of Primobolan in bodybuilding

Perhaps it has never been used extensively here in Europe, but Primobolan Enanthate is probably the absolute favorite steroid of bodybuilders around the world. As already mentioned, when combined with other steroids (such as testosterone, for example), it guarantees solid muscle gains (slow and slight but steady and clean), to the point that it is used both off-season and in preparation (since it is a very dry steroid) with truly excellent results. All this with virtually no side effects and very high tolerability by the human body.

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

Why is Primobolan not as popular as its qualities would suggest?

There are essentially two problems, one resulting from the other. Metenolone (Primobolan) is very effective, highly effective, and very well tolerated by our metabolism... but at a cost: the price! Primobolan is probably the most expensive steroid milligram for milligram, and you need a lot of it (and for a long time) to enhance the results. This leads to another problem: due to its high price and the long time it takes to see its effectiveness, Primobolan is probably the most counterfeited steroid there is. In fact, it often happens that UGL laboratories sell Masteron as Primobolan, or falsify the doses, or, believe it or not, sell simple sterile oil!