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A Brief Intervention for Cannabis Use

Development of a Novel Cannabis Brief Intervention for Frequently-Using Emerging Adults: Pilot Randomized Trial

Who can join

Ages 18 to 25 · All sexes

Inclusion Criteria:

1. Ages 18-25
2. Self-Report report cannabis use on at least 20 days of the past 30 days
3. Submit a positive urine cannabinoid test

Exclusion Criteria:

1. Currently engaged in substance use treatment for any type of substance use or currently treatment seeking
2. History of substance use treatment for any type of substance
3. Severe alcohol use disorder or indication of any substance use disorder requiring a higher level of care (AUDIT score ≥14 or DUDIT score ≥2 for women, ≥6 for men)
4. Significant or acutely unstable medical or psychiatric problems (i.e., psychosis, mania) that would contraindicate research procedures, interfere with safety, compromise data integrity, or preclude consistent study participation (Screening psychosis score =7)
5. Significant risk of suicide or homicide
6. Currently pregnant or breastfeeding

About the study

The purpose of this study is to compare two brief interventions targeting potentially problematic cannabis use in emerging adults (ages 18-25). Brief interventions are two 40-50 minute sessions separated by 1 week. Eligible emerging adults will complete a detailed cannabis assessment (biological and self-report), followed by one of the two brief interventions, and four follow-up assessments: one immediately after the second session and at 1-, 3-, and 6-months post-intervention. Assignment to the brief intervention is random. Salivary samples will be collected at baseline, post-intervention, and all follow-ups, for a total of 5 samples, to be tested for tetrahydrocannabinol (THC) and cannabidiol (CBD).

What is being tested

• Health Education (HealthEdu) (behavioral)
• Bloom (behavioral)

Sponsor: Medical University of South Carolina · Participants: 62 · Started: Oct 18, 2024

Contact the study team

• Kathryn Gex, Ph.D. · Phone: (843) 792-4904

Official record on ClinicalTrials.gov — NCT06395389

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Oct 1, 2026. Each study sets its own eligibility; the study team decides who can join.