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Male contraceptives under trial

    IPPF Medical Bulletin
    |February 1, 1975
    PubMed
    Summary

    Developing male contraceptives remains challenging. Research presented on cyproterone acetate and progestagen-testosterone combinations shows promise but requires further study on long-term effects before commercial availability.

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    Area of Science:

    • Reproductive Physiology
    • Pharmacology
    • Contraception

    Background:

    • The 4th biological workshop of the International Planned Parenthood Federation focused on male fertility agents.
    • Experts discussed advancements in male reproductive physiology and contraceptive research.

    Purpose of the Study:

    • To review current research on agents affecting male fertility.
    • To report on the latest human trials of potential male contraceptive methods.

    Main Methods:

    • Clinical trials of cyproterone acetate were presented.
    • Studies involving progestagen combined with testosterone were discussed.
    • Various progestagen combinations, including R2323, were evaluated.

    Main Results:

    • Cyproterone acetate in low doses inhibits sperm maturation in the epididymis.
    • High doses of cyproterone acetate affect libido; low doses have negligible effects.
    • Progestagen-testosterone combinations aim to inhibit sperm production while maintaining male characteristics.

    Conclusions:

    • Significant challenges remain in developing male contraceptives.
    • Further research, particularly on long-term side effects, is necessary.
    • Commercial availability of male contraceptives is still several years away.
    Keywords:
    ContraceptionContraception ResearchContraceptive AgentsContraceptive Agents, MaleEconomic FactorsFamily PlanningMale ContraceptionResearch And DevelopmentTechnology

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