Pronabol is the brand name for the steroid methandrostenolone. It increases the protein volume in the body, thereby accelerating the set of muscle mass. Pronabol (Methandrostenolone) is a testosterone derivative, a strong anabolic steroid with moderate androgenic properties. First appeared on the market in 1960, and began to be actively used by athletes. In 1980, it was banned in the USA, but this did not affect its popularity in any way, it remained the most massive and most used steroid in the world.

Side effects of Pronabol
This steroid is c-17 alpha alkylated, which protects it from destruction by the liver, but at the same time makes it toxic to the liver itself. Therefore, taking pronabol for too long is not recommended.
Pronabol is structurally identical to boldenone, with the exception of the c-17 methyl radical. But this does not mean that they are similar in their effect. In the body, methandrostenolone aromatizes to 17alpha-methylestradiol, a more active form of estrogen than estradiol itself. But pronabol (methandrostenolone) is more powerful than boldenone in building mass.

Therefore, pronabol is used in the off-season, and boldenone during the pre-competitive preparation.
The half-life of pronabol (methandrostenolone) is 3-5 hours, so its blood level varies greatly during the day. It is usually recommended to divide the daily dose into several doses, but this will lead to a lower peak blood level. Bill Roberts, a well-known steroid researcher, believes that for less suppression of the pituitary-hypothalamic arch, it is better to take the entire dose at one time, since in this case the stress for the body will be one-time during the day.