CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 157 enrolled
Drug / intervention
THC 7.2% +2 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT02983773
NCT02983773Phase 2Completed
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Marijuana's Impact on Alcohol Motivation and Consumption

Brown University·interventional·Posted Dec 6, 2016·Updated Apr 21, 2026

In Brief

A Phase 2 clinical trial evaluating THC 7.2%, THC 3.1%, and 1 other intervention for Alcohol Drinking and Marijuana. Completed, enrolled 157 participants across 1 site.

Detailed Summary

This laboratory study will employ a repeated measures experimental design to examine the effect of high (7.2% THC) and moderate (3.1% THC) dose of marijuana, relative to placebo, on alcohol craving and on behavioral economic measure of alcohol demand after exposure to alcohol cues, and on subsequent drinking in an alcohol choice task in which participants choose either to drink or receive monetary reinforcement for drinks not consume. The study will recruit 173 non-treatment seeking heavy episodic alcohol drinkers who smoke marijuana at least twice weekly.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsAlcohol Drinking, Marijuana
CountriesUnited States
CollaboratorsNational Institute on Alcohol Abuse and Alcoholism (NIAAA)

Timeline

Phase 2CompletedFinished
2017201820192020202120222023202420252026
First PostedDec 6, 2016
Enrollment StartJan 23, 2017
Primary CompletionJul 21, 2021
TodayJul 2, 2026
Enrollment to primary: 4.5 yearsPosted 9.6 years ago

Interventions

THC 7.2%drug

1 smoked marijuana cigarette with 7.2% THC

THC 3.1%drug

1 smoked marijuana cigarette with 3.0% THC

Placebodrug

1 smoked placebo marijuana cigarette