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Manufacturer Ultima Pharmaceuticals Proviron (Mesterolone 25mg in tablet, 50 tabs in box) can be called one of the most undervalued drugs in a bodybuilder’s arsenal. Proviron is not a classic anti-estrogen. Moreover, Ultima-Proviron (active ingredient – Mesterolone) is an anabolic steroid preparation, a derivative of dihydrotestosterone. According to the structure, Mesterolone molecule is very similar to Methenolone, in fact, the difference between the two drugs is approximately the same as between men and women.
Ultima-Proviron daily dosages: ranges from 25 to 100 mg, which is generally 1-4 tablets.