Mesterolone chemical structure is very close to DHT, the only difference compared to DHT is added to a methyl group. This very small difference in system nevertheless has various effects of these two substances in the body. Proviron given injekcyjnie shows some anabolic properties, but oral administration as a result of the metabolism of this substance leads to a significant weakening of the anabolic effect.
Provion being reduced SAA can not be aromatization also been shown to block aromatase, thus reducing the effects caused by an excess of estrogen produced in the aromatization process (edema, gynecomastia). The use of this drug also helps to build a better quality weight (limit growth of fat tissue for estrogen matter limitations). There is speculation that proviron can lower estrogen receptor, which makes it even more effective in combating the effects caused by the estrogens. The anti-estrogenic properties of Proviron are not unique. Several other steroids also demonstrated similar activity. For example, DHT and Masteron (2methyl-dihydrotestosterone) were successfully used as therapies for gynecomastia and breast cancer due precisely with its anti-estrogenic effect. Prowiron also has a weak ability to inhibit the 5 alpha reductase.
In a study conducted in New York we found that of 250 men only 85 minor signs indicating “suppress” in the rest of Proviron did not cause blockade of the hypothalamic-pituitary-testes and is at a dose of 150 mg / day administered for a year. The study does not mention any effect on the normal level of LH and FSH levels at doses of 100 – 150 mg / day, but decreased their level in patients who had elevated. Proviron is therefore no substitute Clomid / Nolvadex in the PCT, but they will not be touched.