Proviroxyl 25 - Kalpa Pharmaceuticals

Released in 1934 by Schering, Mesterolone (Proviron®) is one of the oldest steroidal compounds used in clinical settings. It arrived at a time when hormone therapy was still experimental, preceding many injectable testosterone derivatives. Though not anabolic in the modern sense, its oral bioavailability and androgenic effect earned it wide use in treating male hypogonadism and infertility. Its unique profile—low estrogen conversion and minimal suppression—kept it relevant in medical practice for over 70 years.

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For detailed information about Proviroxyl 25 by Kalpa Pharmaceuticals, consult with your doctor or healthcare professional.