The anabolic effect of Primobolan is quite mild and comparable to the Deca, so this sterod is most often used during the cutting cycle, where the main aim is not to gain muscle mass but to keep it. Methenolone has minimal rollback phenomenon, however, many athletes are dissatisfied with the results obtained after Primobolan only cycle if the goal was to increase muscle mass.
Primobolan slightly reduces production of testosterone. Its overwhelming impact is weaker than testosterone and Nandrolone. Studies show that Primobolan cycle at a dose of 40 mg (oral) suppresses testosterone levels by 50%. A significant reduction in endogenous testosterone production is only observed at long cycles with high doses of the steroid. In these cases, during the cycle, it is required to use gonadotropin, otherwise testicular atrophy may develop. Due to low androgenic effect, Primobolan practically does not cause baldness. Usually methenolone causes side effects such as aggression, anxiety, insomnia, and the rise of liver enzymes when used at high doses.