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Cannabidiol and Alcohol Use Disorder Phenotypes

Effects of Full-spectrum Cannabidiol on Alcohol Consumption and Alcohol Use Disorder Phenotypes: Implications for Precision Medicine

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07279558
Acronym
CAP
Enrollment
150
Registered
2025-12-12
Start date
2026-04-21
Completion date
2029-08-31
Last updated
2026-09-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Alcohol Use Disorder

Keywords

Alcohol, Cannabidiol

Brief summary

The goal of this study is to learn how CBD affects drinking in people who drink alcohol regularly. Researchers want to see if CBD can help people drink less and reduce problems related to alcohol use.

Detailed description

Your participation will include up to five in-person visits over about 13 weeks, including a screening visit, a visit to get your medication, a midpoint visit, an experimental lab session, and a final follow-up visit. You will be assigned to a study medication which you will take daily for 8 weeks while completing daily surveys and weekly virtual check-ins with the research team. During the experimental lab session visit, you will be offered alcohol to drink at the bar lab.

Interventions

DRUGFull-Spectrum Cannabidiol (CBD)

Dose: Approximately 200mg of full-spectrum CBD (\<0.3% THC) Active Ingredients: Full spectrum hemp extract Other Ingredients: Hemp seed oil, glycerin, gelatine.

DRUGBroad-Spectrum Cannabidiol (CBD)

Dose: Approximately 200mg of broad-spectrum CBD, (0% THC) Active Ingredients: Broad spectrum hemp extract Other Ingredients: Hemp seed oil, glycerin, gelatine.

DRUGPlacebo

Active Ingredients: N/A Other Ingredients: Hemp seed oil, glycerin, gelatine.

Sponsors

University of Colorado, Denver
Lead SponsorOTHER
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
21 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Age 21-65 2. Have used CBD and cannabis at least once in the last year 3. Regularly drink alcohol 4. Able to provide informed consent and attend in-person study visits

Exclusion criteria

1. Current use of medications known to have major interaction with Epidiolex, Marinol, or alcohol 2. Current use of antiepileptic medication or any psychotropic medication besides antidepressants 3. Pregnant, nursing, or planning a pregnancy 4. Medical conditions that contraindicates the use of CBD or alcohol 5. Current medical conditions that may require intensive care during the study period Not everyone will qualify to be in the study. Other inclusion and

Design outcomes

Primary

MeasureTime frameDescription
Alcohol Self-Administration During the Bar Lab TaskWeek 8Number of drinks (between 0-8) subjects choose to self-administer during the Bar Lab Alcohol Self-Administration Task at the week 8 study visit.
Change in Self-Report of Drinking Behavior (Drinks Per Drinking Day)Baseline, Week 4, Week 8, and Week 12Drinks Per Drinking Day (DPDD) during the 12-week study period as reported on Timeline Follow Back at Baseline (prior to treatment), Week 4, Week 8, and Week 12.
Change in Phosphatidylethanol (PEth)Baseline, Week 4, Week 8, and Week 12Phosphatidylethanol (PEth) concentration in blood samples collected at Baseline (prior to treatment), Week 4, Week 8, and Week 12.

Secondary

MeasureTime frameDescription
Change in Negative Emotionality ANA Domain ScoreBaseline, Week 8This summary score will be calculated for change from baseline to follow-up for each of the four ANA Negative Emotionality Measures (Beck Depression Inventory-II, Beck Anxiety Inventory, State-Trait Anxiety Inventory and Drinker Inventory of Consequences-2R) . We will first subtract baseline raw scores from follow-up raw scores for each measure. The summary score will be comprised of the average of the standardized Z scores of the change scores created for each of the four measures. Z scores will range from -3 to 3 after adjusting for outliers, with higher average Z scores indicating a worse outcome.

Countries

United States

Contacts

CONTACTHollis C Karoly, PhD
hollis.karoly@cuanschutz.edu303-724-7179
CONTACTLandon Tomb, M.S.
landon.tomb@cuanschutz.edu225-244-3429
PRINCIPAL_INVESTIGATORHollis C Karoly, PhD

University of Colorado School of Medicine- Anschutz Medical Campus

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 17, 2026