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    Genesis MESVIRON 100tab 25mg/tab

Genesis MESVIRON 100tab 25mg/tab

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  • €46.80 €36.04


Manufacturer: Genesis

Interested in Proviron? Learn more about this medication with anti-estrogenic properties and its history in the world of bodybuilding and medicine.

Proviron, or Mesterolone, acts as a C17-aa anabolic steroid, primarily functioning as an anti-estrogenic agent. By obstructing estrogen receptors in the brain, it triggers an increase in Gonadotropins (LH and FHS), prompting the testes to produce more testosterone. Unlike many anabolic steroids, Proviron lacks direct anabolic or androgenic activity.

Originally synthesized in the 1970s, Proviron experienced a decline by the late 1990s, with the pharmaceutical company Schering ceasing its production. Presently, genuine Proviron is nearly nonexistent, and online sellers claiming to offer the product may be peddling counterfeit versions. Reports suggest that Proviron available online may be smuggled from regions like Asia, Russia, and Mexico, casting doubt on its authenticity.


Proviron was previously indicated for treating testosterone deficiency and male infertility caused by issues in the hypothalamus, pituitary, or testes.


Proviron exhibits more androgenic than anabolic effects. It's commonly used by athletes and bodybuilders to counteract testosterone suppression resulting from prolonged use of exogenous anabolic steroids.

While some users claim Proviron enhances muscle bulging and definition, its efficacy remains debated. The prevalence of counterfeit products in the market further complicates its perceived effectiveness. Additionally, Proviron's anti-estrogenic activity mitigates side effects like breast enlargement and water retention commonly associated with anabolic steroids.


Typically, Mesterolone is administered orally at 25 mg, 2-3 times daily for several months, followed by maintenance therapy. Due to its rapid absorption and extended half-life of 12-24 hours, Proviron remains detectable in urine for up to two weeks after the last dose.

Side Effects:

While not universal, Proviron may cause adverse effects such as painful erections, loss of libido, fatigue, voice deepening, hair growth, acne, and oily skin.


Proviron is contraindicated in children, pregnant individuals, those with abnormal liver function, prostate cancer, and allergies.

Legal and Detection:

Though not illegal to possess, Proviron is banned by most sports organizations and actively screened for in urine tests. Classified as a Schedule III drug under the Controlled Substances Act in the USA, its use is closely monitored.

Final Thoughts:

Genuine Proviron is exceedingly rare, with most available products likely counterfeit. For individuals seeking bodybuilding enhancements, alternatives like Arimidex may offer better outcomes.

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