Can CBD help heavy drinkers cut back? new study seeks answers
NCT ID NCT05613608
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether full-spectrum or broad-spectrum CBD can help people with alcohol use disorder drink less. 180 adults who want to reduce or quit drinking will receive either CBD or a placebo for 12 weeks. Researchers will track changes in drinking habits, cravings, and anxiety.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2/3
Runs two stages together: whether the treatment works, then large-scale confirmation.
- Participants
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About 180 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2023
- Expected to finish
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Apr 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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21 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Must be ≥21 years old. 2. Meets Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-V) criteria for current Alcohol Use Disorder (AUD) of at least moderate severity (i.e., 4 or more DSM-V symptoms). 3. Expresses desire to reduce or quit drinking. 4. If male, reports drinking, on average, at least 15 standard alcoholic drinks per week prior to screening; if female, reports drinking, on average, at least 10 standard drinks per week prior to screening, or if a male respondent reports consuming 5 or more alcoholic drinks on at least one drinking day per week on average (4 or more if female). 5. Able to attend in-person visits at the study site. 6. Participants reporting current nicotine use in any form will be included. Exclusion Criteria: 1. Self-reported DSM-V diagnosis of any other substance use disorder. 2. Self-report illicit/recreational use of cocaine, methamphetamines, amphetamines, MDMA, opioids, or benzodiazepines in the last 30 days. 3. Uses CBD products for medical reasons. 4. Self-reports or indicates having a serious DSM-V psychiatric disorder, including panic disorder, obsessive/compulsive disorder, post-traumatic stress disorder, bipolar affective disorder, schizophrenia, cluster B personality disorders (borderline, antisocial, histrionic, narcissistic), eating disorders, or any other psychotic mental disorder. 5. Endorsing item 2 on the C-SSRS measure of suicide risk. 6. Currently taking any of the following medications: 1. Those known to have a major interaction with Epidiolex. 2. Acute treatment with any antiepileptic medications. 3. Medication known to affect alcohol intake (e.g., disulfiram, naltrexone, acamprosate, and/or topiramate). 7. Self-reported history of severe alcohol withdrawal (e.g., seizure, delirium tremens). 8. Clinically significant medical problems in the last six months, such as cardiovascular, renal, gastrointestinal, or endocrine problems, that would impair participation or limit medication ingestion. 9. Current or past alcohol-related medical illness, such as gastrointestinal bleeding, pancreatitis, hepatocellular disease, or peptic ulcer. 10. Females of childbearing potential who are pregnant, nursing, or who are not using a reliable form of birth control. 11. Current charges pending for a violent crime (not including DUI-related offenses). 12. Lack of a stable living situation. 13. Lack of access to internet.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Colorado Anschutz
RECRUITINGAurora, Colorado, 80045, United States
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