Proviron (Mesterolone)

Mesterolone, sold as Proviron, is a 17alpha-alkylated oral androgen that sits in an unusual spot: it is mild enough for long-term use by many people, and it also has genuine anti-estrogenic activity, meaning it can reduce estrogen-related water retention and mild gyno rather than causing it.

What it actually does

The effect is genuinely subtle. Proviron will not build meaningful mass on its own and it is not going to transform a physique by itself. Its value is as a supporting piece - managing the estrogen that harder compounds generate, helping the look dry out during a cut, or bridging a gap at the end of a cycle. Used by itself at 50mg a day, the results are modest, which is the honest framing for anyone considering it.

Checks

• Label names mesterolone and states mg per tablet - genuine Proviron is a small 25mg tablet.
• Sealed bottle, printed batch and expiry, tablets intact and uniform.
• It is inexpensive, so fakes are more about underdosing than substitution.
• Store cool and dry, away from pets and heat.