CBD showed no clear advantage over placebo in alcohol use disorder trials
Drinking declined in both groups, but neither trial established an added benefit from cannabidiol; side effects limited dosing for some participants taking it.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Both CBD and placebo groups reduced drinking, but neither trial demonstrated a CBD advantage for drinking outcomes, craving, mood or anxiety. PTSD symptom severity was assessed only in Study 2, where CBD also showed no demonstrated advantage. The results do not establish efficacy at the drug levels achieved, and side effects limited dosing for some participants.
These were small proof-of-concept trials. Failure to show superiority does not establish equivalence, and the authors state that larger, adequately powered studies are needed to clarify any therapeutic effect.
What researchers found
Average drinks per day during treatment
CBD versus placebo during sequential 4-week dose periods in Study 1 and 6 weeks in Study 2.
Why the placebo comparison matters
Drinking declined in both treatment groups. That makes the between-group comparison central to interpreting the result: the improvements seen among CBD recipients alone do not demonstrate that CBD caused them.
Side effects limited some doses
Dose-limiting side effects occurred in 7/31 participants assigned to CBD (22.6%). This finding matters alongside the lack of demonstrated benefit, although the abstract does not give a corresponding placebo rate.
The original publication
Effects of cannabidiol in alcohol use disorder patients with and without co-occurring post-traumatic stress disorder: Tolerability but no evidence for efficacy in two randomized proof-of-concept trials.
Bogenschutz MP, Blessing E, Dgheim D et al.
Alcohol Clin Exp Res (Hoboken) · 2026
- PubMed ID
- 41312717
- Record checked
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