About this trial
To explore the effectiveness of psilocybin-assisted therapy on reducing alcohol consumption in a double-blind, randomised, phase II clinical trial.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Moderate to severe AUD according to the DSM-5 criteria
A desire to reduce or stop drinking
Consumed at least 21 standard drinks per week or ≥2 HDD (≥5 standard drinks/day for men; ≥4 for women) in the past week prior to screening
Aged ≥18 years old
Disqualifiers
Any psychotic disorder
Bipolar disorder type 1 or 2
Major depression with psychotic features
Any personality disorders
Trial design
Parallel
Treatments tested in this trial
Psilocybin
DrugPsilocybin is a naturally occurring psychedelic prodrug compound produced by more than 200 species of fungi.
Niacin
DrugA nutrient in the vitamin B complex that the body needs in small amounts to function and stay healthy. Niacin helps some enzymes work properly and helps skin, nerves, and the digestive tract stay healthy. Niacin is found in many plant and animal products. Niacin will be used at a concentration of 250mg as an active control.
Treatment groups
Trial outcomes
Primary outcomes
Frequency of Heavy Drinking Days (HDD)
Frequency of HDD as measured by the Timeline Follow Back (TLFB) and validated by Phosphatidylethanol (PEth). HDD are defined as ≥4 drinks/day for women and ≥5 drinks/day for men.
Secondary outcomes
Mean alcohol consumption per drinking day
The mean alcohol consumption per drinking day will be gathered reported as the number of standard drinks consumed each day.
Absence of any HDD
Measured by Timeline Follow Back and corroborated with Phosphatidylethanol (PEth) levels
WHO drinking risk level
The WHO categorizes alcohol consumption into different risk levels based on average daily intake and associated health risks: Abstainer: Rarely or never drinks alcohol. Low-risk drinking: (Men: Up to 2 standard drinks per day, Women: Up to 1 standard drink per day). Moderate-risk drinking: (Men: 3-4 standard drinks per day, Women: 2-3 standard drinks per day). High-risk drinking: (Men: More than 4 standard drinks per day, Women: More than 3 standard drinks per day). Heavy episodic (binge) drinking: 60 grams (5-6 drinks) or more on a single occasion.
Dependence Severity
Alcohol Dependence Scale (ADS) is a measure of the severity of the participant's dependence on alcohol. The measure contains 29 items regarding symptoms and occurrences associated with dependence on alcohol. A total score for the measure is yielded by adding across items. Higher scores indicate more severe dependence.
Locations
Sponsors and contacts
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University of Sydney
Lead sponsor
Woke Pharmaceuticals
Collaborator
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