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Probenecid Administration for Alcohol Craving and Consumption

Probenecid, Pannexin 1 Channels for Alcohol Use Disorder

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07118618
Acronym
PROB2
Enrollment
120
Registered
2025-08-12
Start date
2026-03-14
Completion date
2030-12-31
Last updated
2026-03-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Alcohol Consumption, Alcohol Use Disorder (AUD), Craving

Keywords

AUD, Probenecid, Craving, Alcohol

Brief summary

This study proposes a 16-week, between-subject, double-blind, randomized controlled trial (RCT) with probenecid (2g /day) compared to placebo in individuals with AUD to test if reduces craving and alcohol consumption.

Detailed description

There are three aims in this study that test the hypothesis that probenecid compared to placebo, decreases: * Aim 1 (laboratory phase): acute alcohol craving. * Aim 2 (naturalistic phase): alcohol craving. * Aim 3 (naturalistic phase): alcohol consumption

Interventions

DRUGPlacebo Oral Tablet

Inactive compound

Sponsors

Brown University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

16-week, between-subject, double-blind, randomized controlled trial (RCT) with probenecid (2g /day) compared to placebo

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* • Male or female, ≥18 years. * women \>7 drinks/week; men \>14 drinks/week. * meet moderate to severe AUD score for DSM-5 criteria. * Breath Alcohol Content (BrAC)=0.00 at each visit. * in good health as confirmed by medical history, physical examination and lab tests. * willing to adhere to the study procedures. * understand informed consent and questionnaires in English at an 8th grade level.

Exclusion criteria

* • Women who are breastfeeding or positive urine test for pregnancy. * clinically significant medical abnormalities: unstable hypertension, clinically significant abnormal EKG, bilirubin \>150% of the upper normal limit, ALT/AST \>300% the UNL, creatinine clearance ≤60 dl/min * meet DSM-5 criteria for a diagnosis of schizophrenia, bipolar disorder, or other psychoses * medications that reduce alcohol consumption (naltrexone, disulfiram). * use aspirin (salicylates may reduce effect of probenecid), penicillin, methotrexate (may increase concentration). * history of suicide attempts in the last three years. * current diagnosis of a moderate or severe cannabis use disorder as assessed by self-report, SCID-E for SUD, and urine toxicology screen at baseline. * current diagnosis of another substance disorder at any severity, other than nicotine, as assessed by self-report, SCID-E for SUD, and urine toxicology screen at baseline. * current use of medications that may interact with probenecid. * history of hypersensitivity to sulfa drugs.

Design outcomes

Primary

MeasureTime frameDescription
Acute Alcohol Craving5- weekAcute alcohol craving during an alcohol cue-reactivity procedure assessed using change in the alcohol urge questionnaire (AUQ). AUQ consists of eight statements about the respondent's feelings and thoughts about drinking as they are completing the questionnaire (i.e., right now). Drinking refers to various types of alcohol, including beer, wine and liquor. The respondent is asked to respond to each statement about alcohol craving via a 7-item Likert scale ranging from "strongly disagree" to "strongly agree." Each item is scored on a 1 to 7 scale (Strongly Disagree = 1 and Strongly Agree = 7). Items 2 and 7 are reverse scored. A total score is computed by averaging the item scores. Minimum score is 7, maximum score is 48. Higher scores reflect greater alcohol craving (worse outcome)

Secondary

MeasureTime frameDescription
Alcohol craving12-weekAlcohol craving in naturalistic condition will be measured using craving the Obsessive Compulsive Drinking Scale (OCDS). The OCDS is a 14-item questionnaire, each rated on a scale from 0 to 4 that measures individuals' alcohol use and their attempts to control their drinking. Range Min score 0; max score. OCDS can also divided into two subscales: Obsessive subscale (items 1-6): max score = 24; Compulsive subscale (items 7-14): max score = 32. Higher scores reflect greater alcohol craving (worse outcome). Each item contributes equally to the total, and higher scores reflect greater obsessive and compulsive thoughts and behaviors related to alcohol use.

Countries

United States

Contacts

CONTACTBrian Gully, MA
brian_gully@brown.edu401-863-6646
PRINCIPAL_INVESTIGATORCarolina Haass-Koffler, PharmD, PhD

Brown Univiversity

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 18, 2026