Does pot make you drink more? study investigates

NCT ID NCT02983773

Completed Knowledge-focused Sponsor: Brown University Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how smoking marijuana with different levels of THC affects alcohol cravings and drinking in people who are heavy drinkers and also use marijuana. 157 participants were given either a high-THC, moderate-THC, or placebo marijuana cigarette, then their alcohol cravings and drinking choices were measured. The goal was to understand the relationship between marijuana and alcohol use, not to test a treatment.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: THC (tetrahydrocannabinol) in smoked marijuana cigarettes
What this could lead to: If successful, this could help understand how marijuana use influences alcohol cravings and drinking behavior, potentially informing future treatments for co-use.
What could go wrong: This is a small, early-stage lab study with 157 participants, not designed to test a treatment. Results may not apply to real-world settings or to people seeking treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Alcohol Drinking cannabis dependence

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ALCOHOL DRINKING MARIJUANA

Contacts and locations

Locations

Brown University

Providence, Rhode Island, 02912, United States

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