Proviron 25 - Pharmaqo Labs

Proviron (mesterolone), developed by Schering, became the first oral androgen marketed for therapeutic purposes. Its structure includes a methyl group at carbon-1, protecting it from rapid breakdown in the liver. Though not a potent anabolic, mesterolone is valued for its ability to suppress estrogenic effects, preventing gynecomastia and promoting muscle definition. Popular in bodybuilding cycles, it is often used during cutting phases to support muscle density. Although not FDA-approved, Proviron remains widely available under brands like Restore and Provibol​.

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For detailed information about Proviron 25 by Pharmaqo Labs, consult with your doctor or healthcare professional.