Proviron (Mesterolone)
Proviron (active substance: Mesterolone) is an oral androgen derived from dihydrotestosterone (DHT). In clinical settings it is primarily prescribed for male sexual dysfunction — including low libido, erectile issues and infertility, typically where low levels of endogenous testosterone are the underlying cause.
Unlike many hormonal therapies, Proviron does not stimulate natural testosterone production; instead, it acts as a substitute to compensate for a hormonal shortfall. It may also lift sexual interest and sperm production in some users.
Use in Sports and Bodybuilding
Proviron is not typically used as a primary agent for muscle growth, since it carries relatively weak anabolic properties. Still, it is valued for its anti-estrogenic effects, helping to prevent the conversion of steroids into estrogen (aromatisation). That makes it a useful addition to steroid stacks — particularly those built around testosterone or other aromatizing compounds — cutting the risk of side effects such as gynecomastia and water retention.
Key Benefits
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Derived from DHT, offering real androgenic support
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May improve libido, potency and sperm count
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Does not suppress natural testosterone production
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Anti-estrogenic — helps block estrogen-related side effects
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A regular feature of steroid stacks to sharpen hardness and definition








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