New male pill aims to stop sperm production
NCT ID NCT03455075
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a daily oral pill can safely and temporarily lower sperm counts in healthy men to prevent pregnancy. Ninety-two men took either the experimental drug (DMAU) alone, DMAU plus another hormone (LNG), or a placebo for 12 weeks. The goal was to see if sperm concentration could drop below 3 million per milliliter, a level considered effective for contraception.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
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Locations
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Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center
Torrance, California, 90509, United States
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University of Washington Medical Center & Health Sciences
Seattle, Washington, 98195, United States