Clinical trial Recruiting at 1 site Phase 3 Interventional Ages 18 and up

Psilocybin in Alcohol Use Disorder with Depression (Relapse Prevention)

Official title: Efficacy in Relapse Prevention: Psilocybin in Alcohol Use Disorder With Depressive Symptoms

Run by Centre Hospitalier Universitaire de Nīmes · NCT07638553 · Data updated 2026-11-12

This study tests whether higher-dose psilocybin-assisted psychotherapy helps prevent relapse in adults with severe alcohol use disorder and depressive symptoms after detox.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment172 (estimated)
SponsorCentre Hospitalier Universitaire de Nīmes
Academic / other
Locations8 sites (Bayonne and 7 other locations)
StatusRecruiting
StartedJune 30, 2026
Main results expectedJune 2030
Study endsJune 2030
Registry record updatedJuly 1, 2026
Trial IDNCT07638553 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with DSM-5–confirmed severe AUD and Beck Depression Inventory II score of 14 or higher, who recently completed detox and are insured.

Probably not a fit

Patients with inability to provide informed consent, ongoing interventional trial participation, or incompatible medical/ethical exclusions may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 3 interventional trial investigates psilocybin-assisted psychotherapy as a relapse-prevention strategy for adults with severe alcohol use disorder who also have depressive symptoms. Participants receive either high-dose or low-dose psilocybin in the context of psychotherapy, following detoxification. The trial builds on prior pilot data suggesting feasibility and potential efficacy for reducing drinking days and addressing depressive symptoms. Outcomes include metrics on relapse risk and drinking behavior over a defined follow-up period. Locations include multiple French centers with centralized sponsor oversight by CHU de Nîmes.

Why it matters

Potential benefit: If successful, the approach could reduce relapse risk and improve mood in people with AUD and depression, potentially offering a new treatment option.

How similar studies have gone: Preliminary data from earlier studies indicate feasibility and potential efficacy of psilocybin-assisted approaches for depression and addiction, supporting further evaluation in this larger Phase 3 trial.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Confirmed DSM-5 diagnosis of severe AUD.
* Scale BDI-II ((Beck Depression Inventory) ≥14
* The last drink must have been consumed between day(D) -60 and D -10 at the inclusion visit. The patient must have had at least 1 HDD during the last drinking period NB: The last drinking period before inclusion is defined by the last 4 weeks counted from the last drink.
* The patient must have given their free and informed consent and signed the consent form
* The patient must be a member or beneficiary of a health insurance plan

Exclusion Criteria:

* The subject is participating in an interventional study, a clinical trial, or a clinical investigation or is in a period of exclusion determined by a previous study
* The subject refuses to sign the consent
* It is impossible to give the subject informed information
* The patient is under safeguard of justice or state guardianship
* Patient unable to give informed consent.
* Participants planning to donate sperm within three months of psilocybin administration
* Positive pregnancy test at inclusion for participants of childbearing age.
* Patient who is pregnant, breastfeeding, or wishing to become pregnant during participation in the study.
* Any use of classical psychedelic in the last year
* Other current substance use disorder (except tobacco)
* Diagnosed schizophrenic or bipolar disorder
* High emotional lability (clinician-judged)
* On antipsychotics treatment that may interfere with psilocybin.
* Need for monoamine oxidase inhibitor (MAOI) treatment, which may interfere with psilocybin.
* Severe suicidal ideation (high risk on the Columbia scale)
* 1st degree family member with a diagnosed psychotic disorder
* Severe cognitive impairment (clinician-judged)
* CIWA-AR \> 8
* Medical conditions that would preclude safe participation in the trial, for example: seizure disorders; significant impairment of hepatic function; coronary artery disease; history of arrhythmia; Abnormal QT interval prolongation (QTc \> 470 ms for women and \>450 ms for men); heart failure; uncontrolled hypertension (greater than 165/95 mmHg at screening); history of stroke; severe asthma; hyperthyroidism; narrow-angle glaucoma; stenosing gastroduodenal ulcer; pyloroduodenal obstruction; symptomatic prostatic hypertrophy or bladder neck obstruction; uncontrolled type I or type II diabetes, or a history of ketoacidosis, hyperglycemic coma, or severe hypoglycemia with loss of consciousness.

Where it's running

  • CHU de Nîmes
    Nîmes, France
    Recruiting
  • Centre Hospitalier de la Côte Basque
    Bayonne, France
    Not yet recruiting
  • CHU Besançon
    Besançon, France
    Not yet recruiting
  • CHU de Bordeaux
    Bordeaux, France
    Not yet recruiting
  • CHU Brest
    Brest, France
    Not yet recruiting
  • CH Le Vinatier
    Bron, France
    Not yet recruiting
Show 2 more locations
  • CHU de Nantes
    Nantes, France
    Not yet recruiting
  • CHU Saint-Etienne
    Saint-Priest, France
    Not yet recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.