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Recruiting Phase 2 NCT05995769

NCT05995769 Psilocybin-Assisted Psychotherapy for Alcohol Use Disorder

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Clinical Trial Summary
NCT ID NCT05995769
Status Recruiting
Phase Phase 2
Sponsor University of Calgary
Condition Alcohol Use Disorder
Study Type INTERVENTIONAL
Enrollment 128 participants
Start Date 2024-03-20
Primary Completion 2027-10-01

Eligibility & Interventions

Sex All sexes
Min Age 22 Years
Max Age 65 Years
Study Type INTERVENTIONAL
Interventions
Psilocybin

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.

This trial targets 128 participants in total. It began in 2024-03-20 with a primary completion date of 2027-10-01.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The aim of this study is to determine if a single dose of psilocybin administered with motivational enhancement therapy (MET) can reduce heavy drinking in patients with an alcohol use disorder (AUD).

Eligibility Criteria

Inclusion Criteria: * Meets DSM-5 AUD criteria of at least moderate severity * Meets heavy drinking requirements (heavy drinking days, number of drinks) in past 30 days * Desire to decrease alcohol consumption * Limited lifetime hallucinogen use Exclusion Criteria: * Severe or moderate substance use disorder other than alcohol or nicotine in past 6 months * Diagnosis of schizophrenia, bipolar disorders or first-degree relative with diagnosis * Active suicidal ideation or serious attempt within past 3 years * Currently pregnant, nursing, or trying to become pregnant * Any notable abnormality on ECG, physical exam, or routine medical blood laboratory test

Contact & Investigator

Central Contact

Kaitlin O'Grady

✉ pactlab@ucalgary.ca

📞 587-893-0257

Principal Investigator

Leah Mayo, PhD

PRINCIPAL INVESTIGATOR

University of Calgary

Frequently Asked Questions

Who can join the NCT05995769 clinical trial?

This trial is open to participants of all sexes, aged 22 Years or older, up to 65 Years, studying Alcohol Use Disorder. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT05995769 trial and what does that mean for participants?

Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.

Is NCT05995769 currently recruiting?

Yes, NCT05995769 is actively recruiting participants. Contact the research team at pactlab@ucalgary.ca for enrollment information.

Where is the NCT05995769 trial being conducted?

This trial is being conducted at Calgary, Canada.

Who is sponsoring the NCT05995769 clinical trial?

NCT05995769 is sponsored by University of Calgary. The principal investigator is Leah Mayo, PhD at University of Calgary. The trial plans to enroll 128 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology