Mesterolone (Proviron) from Maha Pharma is dosed at 25 mg per tablet. It is not an anabolic but a very powerful anti-estrogen. Prevents gynecomastia, while decreasing the retention of water and fat, it allows the revival of the production of testosterone in testicles, while preventing the aromatization of anabolic.
Proviron acts as an anti-aromatic: it prevents the aromatization (transformation) of anabolic steroids into estrogen. He avoids gynecomastia. It can be combined with Nolvadex to increase its effectiveness. It should be noted that Proviron and Nolvadex are two anti-estrogens whose mechanisms of action are different and complementary, and it is for this reason that the combination of these two products is so effective: while Proviron prevents aromatizing anabolic agents, Nolvadex clogs the receptor cells of estrogen, preventing it from acting. It is therefore a formidable tandem.
Proviron is also not only an excellent anti-estrogen : by maintaining a low level of estrogen, Proviron also decreases water retention. It gives the user the skinned look sought after by so many bodybuilders, especially during competition preparations.
It should be noted that Proviron tends to limit muscle gains due to a steroid cycle because it attaches to androgen receptor cells in place of other steroids in the body, which are then blocked outside. and therefore without effect. That’s why many bodybuilders take a minimal dose of Proviron, just to avoid gynecomastia.
As for the side effects of mesterolone, they are rare below 100 mg per day. Indeed Proviron tablets are not alpha-alkylated 17 and are not harmful to the liver. On the other hand, if one begins to exceed 75 to 100 mg per day, one frequently sees phenomena such as priapism (painful situation in which the penis after the erection does not find its normal flaccidity) in the man or virilization in women.