Proviron (Mesterolone)
Proviron (active substance: Mesterolone) is an oral androgen derived from dihydrotestosterone (DHT). In clinical settings, it is primarily prescribed to treat male sexual dysfunction, including low libido, erectile issues, and infertility—typically associated with low levels of endogenous testosterone.
Unlike other hormonal therapies, Proviron does not stimulate natural testosterone production; instead, it acts as a substitute to compensate for hormonal deficiencies. It may also enhance sexual interest and sperm production in some individuals.
Use in Sports and Bodybuilding
Proviron is not typically used as a primary agent for muscle growth, as it possesses relatively weak anabolic properties. However, it is valued for its anti-estrogenic effects, helping to prevent the conversion of steroids into estrogen (aromatization). This makes it a useful addition to steroid stacks, particularly those involving testosterone or other aromatizing compounds, to reduce the risk of side effects like gynecomastia and water retention.
Key Benefits
Derived from DHT, offering androgenic support
May improve libido, potency, and sperm count
Does not suppress natural testosterone production
Anti-estrogenic—helps prevent estrogen-related side effects
Commonly used in steroid stacks to enhance hardness and definition









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