Mesterolone 25 - ZPHC

Mesterolone, marketed primarily as Proviron by Bayer (formerly Schering), was developed in 1934 as one of the earliest oral androgens. Known for its low anabolic properties, Proviron is often used in bodybuilding for its strong androgenic effects, enhancing muscle hardness without water retention. Unique in its composition, mesterolone binds effectively to SHBG (Sex Hormone Binding Globulin), potentially increasing the activity of other steroids in a cycle. Unlike many oral steroids, it is not c-17 alpha alkylated, making it less taxing on the liver and suitable for prolonged use​.

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For detailed information about Mesterolone 25 by ZPHC, consult with your doctor or healthcare professional.