The male pill: a new contraceptive on the horizon?

NCT ID NCT03455075

First seen Nov 01, 2025 · Last updated May 14, 2026 · Updated 22 times

Summary

This study tested whether a daily oral pill (DMAU), taken alone or with another hormone (LNG), can safely and temporarily lower sperm count in healthy men to prevent pregnancy. 92 men took the pill or a placebo for 12 weeks. The goal was to see if sperm counts dropped below a level that makes pregnancy unlikely, offering a new male birth control option.

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Contacts and locations

Locations

  • Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center

    Torrance, California, 90509, United States

  • University of Washington Medical Center & Health Sciences

    Seattle, Washington, 98195, United States

Conditions

Explore the condition pages connected to this study.