Proviron acts as an anti-aromatic: it prevents the aromatization (conversion) of anabolic steroids into estrogen. It avoids gynecomastia and can be combined with Nolvadex to increase its effectiveness. It is indeed clear that Proviron and Nolvadex are both anti-estrogens whose mechanisms of action are different and complementary, and that’s why the combination of these two products is so effective: while Proviron prevents aromatization of anabolics, Nolvadex blocks the estrogen receptor cells, preventing them from acting. It is therefore a formidable tandem.
Proviron is recommended to use in addition to androgens, which are necessary for the sperm production. These androgens directly stimulate sperm production and affect the sperm maturation and transport, due to impact on the seminal vesicles, vas deferens, and appendage. This process shows us that such hormones can perform not only suppressive role. Due to the stimulation of sperm quality and quantity by Proviron which is not detected with suppression of gonadotropins, there are some cases when the medicament is used to treat male infertility.