RCT Finds Single-Dose CBD Has No Effect on Brain Chemistry, Cravings, or Drinking in Youth with Alcohol Use Disorder

What the researchers found

In a within-subjects, double-blind, placebo-controlled trial of 36 youth (ages 17-22) with AUD, acute 600mg CBD showed no significant effects on anterior cingulate cortex glutamate/glutamine or GABA levels, whole-brain or region-of-interest alcohol cue-reactivity on fMRI, psychophysiological response to alcohol cues (HRV, skin conductance, subjective craving), or alcohol use. No adverse events were observed.

Why it matters

Preclinical studies suggested CBD could reduce alcohol use, generating excitement about CBD as a treatment. This first adequately powered human trial in youth found no effects on any outcome, tempering enthusiasm and suggesting chronic administration may be needed.

The numbers in context

36 participants; 600mg CBD single dose; 69% female; ages 17-22; no significant effects on any of the multiple outcomes measured.

How the study worked

Within-subjects, randomized, double-blind, placebo-controlled design. 36 non-treatment-seeking youth with AUD (69% female, ages 17-22). Multi-modal outcomes including proton MRS, fMRI cue-reactivity, psychophysiological measures, and alcohol use tracking.

What this study cannot tell us

Single acute dose may not capture effects that require chronic administration. Relatively small sample (n = 36). Non-treatment-seeking participants may differ from those motivated to reduce drinking. Within-subjects design controls for individual differences but may introduce order effects.

How to read the evidence

Well-designed RCT with multi-modal outcomes, but single-dose design and modest sample size.

When this study was published

2025 publication

The bigger picture

This null result is important. It suggests that single-dose CBD, despite promising animal data, does not acutely alter the neural or behavioral mechanisms underlying alcohol use disorder in young people. This redirects research toward chronic dosing protocols.

Questions still open

• Would chronic CBD administration show effects that a single dose does not?
• Are the preclinical findings on CBD and alcohol not translatable to humans?

Common questions

Read the original research

The neural and psychophysiological effects of cannabidiol in youth with alcohol use disorder: A randomized controlled clinical trial.

Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 50(10), 1482-1492

Citation

Kirkland, Anna E; Browning, Brittney D; Meredith, Lindsay R; Robertson, Elizabeth; Herring, Cori; Tomko, Rachel L; Gray, Kevin M; Squeglia, Lindsay M. (2025). The neural and psychophysiological effects of cannabidiol in youth with alcohol use disorder: A randomized controlled clinical trial.. Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 50(10), 1482-1492. https://doi.org/10.1038/s41386-025-02141-z

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