Gene may influence how nalmefene works in heavy drinkers

NCT ID NCT02639273

First seen Sep 30, 2025 · Last updated May 14, 2026 · Updated 28 times

Summary

This study tested whether nalmefene, a drug that blocks opioid receptors, changes how heavy drinkers' brains respond to alcohol-related cues and how much alcohol they choose to take. Thirteen healthy heavy drinkers (ages 21-60) participated. They received nalmefene or a placebo, then had brain scans and could self-administer alcohol. The study also looked at whether a specific gene (OPRM1) affects these responses.

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Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    Bethesda, Maryland, 20892, United States

Conditions

Explore the condition pages connected to this study.