New study reveals how mixing weed and booze impairs your driving

NCT ID NCT06293040

First seen Oct 31, 2025 · Last updated May 15, 2026 · Updated 28 times

Summary

This study looks at how using vaporized cannabis and drinking alcohol at the same time affects thinking, coordination, and driving skills. About 90 healthy adults will take part in seven sessions where they receive different combinations of cannabis (placebo, 5 mg, or 25 mg THC) and alcohol (placebo or enough to reach a breath alcohol level of 0.05%). The goal is to measure impairment using cognitive tests, field sobriety tests, and a driving simulator, helping to understand the real-world risks of combining these substances.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Johns Hopkins Behavioral Pharmacology Research Unit

    RECRUITING

    Baltimore, Maryland, 21224, United States

    Contact Email: •••••@•••••

Conditions

Explore the condition pages connected to this study.