Known as Proviron, mesterolone is used globally for male androgen deficiency and as a bodybuilding aid. Its DHT-based structure allows it to resist conversion to estrogen, preventing common side effects like water retention. Mesterolone’s strong binding to SHBG allows other steroids in a cycle to remain in an unbound, active state, enhancing their overall effectiveness. This makes it a popular choice in pre-competition phases, where muscle hardness and definition are prioritized. Proviron is typically supplied in 25 mg tablets, with Bayer as the main producer.
Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.
Disclaimer: Information provided it this page is for general information only and does not substitute for professional medical advice.
For detailed information about GP Proviron 25 by Geneza Pharmaceuticals, consult with your doctor or healthcare professional.
Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.
Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.
Llewellyn, W. (2017). William Llewellyn's Anabolics.
United States: Molecular Nutrition, LLC.