Chronic Treatment with Finasteride Daily Does Not Affect Spermatogenesis or Semen Production in Young Men

    October 1999 in “ The Journal of Urology ”
    James W. Overstreet, Vivian L. Fuh, John Gould … Keith D. Kaufman
    Studysummary This study concluded that daily treatment with 1 mg finasteride did not affect spermatogenesis or semen production in young men and had small, reversible effects on prostate volume and serum PSA.
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    Research cited in this study 8

    1. Finasteride in the Treatment of Men with Androgenetic Alopecia Journal of The American Academy of Dermatology · 1998
    2. The Effect of Finasteride on the Risk of Acute Urinary Retention and the Need for Surgical Treatment Among Men with Benign Prostatic Hyperplasia The New England Journal of Medicine · 1998
    3. Maximum Efficacy of Finasteride Is Obtained Within 6 Months and Maintained Over 6 Years European Urology · 1998
    4. The Effect of Finasteride, a 5 Alpha-Reductase Inhibitor, on Scalp Skin Testosterone and Dihydrotestosterone Concentrations in Patients With Male Pattern Baldness The Journal of Clinical Endocrinology and Metabolism · 1994
    5. The Effect of Finasteride in Men with Benign Prostatic Hyperplasia The New England Journal of Medicine · 1992
    6. Effect of Finasteride, a 5 Alpha-Reductase Inhibitor, on Serum Gonadotropins in Normal Men The Journal of Clinical Endocrinology and Metabolism · 1992
    7. Decreased Fertility in Male Rats Administered the 5α-Reductase Inhibitor, Finasteride, Due to Deficits in Copulatory Plug Formation Reproductive Toxicology · 1991
    8. Reversible Decreases of Fertility in Male Sprague-Dawley Rats Treated Orally with Finasteride, a 5α-Reductase Inhibitor Reproductive Toxicology · 1991