Testing LGG for Alcohol Use Disorder and Liver Injury
Official title: Lactobacillus Rhamnosus GG: A Novel Probiotic Therapy for Treating Alcohol Use Disorder
Run by University of Louisville · NCT05178069 · Data updated 2026-11-12
This study is testing if a probiotic called LGG can help people with Alcohol Use Disorder and liver issues drink less and improve their liver health over six months.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 21 Years to 65 Years |
| Sex | All |
| Enrollment | 60 (estimated) |
| Sponsor | University of Louisville Academic / other |
| Locations | 1 site (Louisville, Kentucky) |
| Status | Recruiting |
| Started | June 1, 2022 |
| Main results expected | August 31, 2026 |
| Study ends | February 28, 2027 |
| Registry record updated | October 31, 2025 |
| Trial ID | NCT05178069 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 21 to 65 with a diagnosis of Alcohol Use Disorder and moderate liver injury.
✕Probably not a fit
Patients with severe liver disease or those not meeting the heavy drinking criteria may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial aims to evaluate the efficacy of Lactobacillus Rhamnosus GG (LGG) supplementation over six months compared to a placebo in patients with Alcohol Use Disorder (AUD) and moderate Alcoholic Hepatitis (AH). The study will assess the impact of LGG on reducing heavy drinking, relapse episodes, and biochemical markers of alcohol intake, as well as improving liver function and overall health outcomes. Additionally, it will explore the effects of LGG on gut-brain axis markers and pro-inflammatory activity in these patients.
Why it matters
Potential benefit: If successful, this treatment could significantly improve recovery outcomes for patients with AUD and liver injury.
How similar studies have gone: While the approach of using probiotics in AUD is emerging, this specific application of LGG in conjunction with liver injury is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Breath alcohol concentration (BAC) equal to 0.00 when the participant signs the informed consent document. 2. Age between 21 and 65 years old (inclusive). 3. Willingness to receive trial treatment. 4. Ability to provide informed consent 5. Understanding that this is not an alcohol treatment study. 6. Heavy drinking. Men must consume ≥ 20 and women ≥ 14 standardized alcoholic beverages a week for the past 3 months. 7. Diagnosis of Alcohol Use Disorder using DSM V criteria. 8. 50 \<AST\<400 U/L; AST \> ALT; and ALT \< 200 U/L; total bilirubin \> 1.2 mg/dL 9. Model for End-Stage Liver Disease: 8 ≤ (MELD) ≤19. 10. Good health as confirmed by medical history, physical examination, ECG, laboratory tests and vital signs except for liver injury and AUD related history. 11. Provide contact information for someone who may be able to contact the subject in case of a missed appointment. 12. . Females of child-bearing potential must not be pregnant and must be using birth control Exclusion Criteria: 1. Current (last 12 months) DSM V diagnosis of dependence on any psychoactive substance other than alcohol or nicotine, 2. Positive urine drug screen at baseline for any illegal substance other than marijuana, 3. History of hospitalization for alcohol intoxication delirium, alcohol withdrawal delirium or seizure, 4. Participation in any research study for alcoholism treatment within 3 months prior to signing the informed consent, 5. Pharmacological treatment with naltrexone, acamprosate, topiramate, or disulfiram within 1 month prior to randomization, 6. Lifetime diagnosis based on DSM-V criteria of schizophrenia, bipolar disorder, or other psychosis, eating disorders; current or past year diagnosis of major depression 7. In the investigators' opinion, moderate to severe risk of suicide (e.g., active plan, or recent attempt in last 6 months), 8. Current use of psychotropic medications that cannot be discontinued, 9. Clinically significant medical abnormalities (apart from moderate ALD, MELD≤19), 10. Clinical Institute Withdrawal Assessment for Alcohol revised (CIWA-Ar) \>10, at screening for more than 3 days, 11. Serious medical diseases, such as cancer, liver cirrhosis, pancreatitis, severe alcohol associated hepatitis, heart chronic failure, chronic kidney failure, chronic intestinal diseases (e.g., Crohn's disease), chronic neurological disorders (e.g., tardive dyskinesia, epilepsy, Parkinson's disease) 12. History of clinically significant hypotension (e.g., history of lipotimia and/or syncopal episodes) 13. History of adverse reactions to needle puncture, 14. Obesity (BMI ≥ 33.0 kg/m2), 15. Pregnancy; incarceration; inability to provide consent 16. Signs of systemic infection: Fever \> 38o C, positive blood or ascites cultures, on appropriate antibiotic therapy for \> 3 days within 3 days of inclusion 17. Acute gastrointestinal bleeding requiring \> 2 units blood transfusion within the previous 2 weeks 18. Undue risk from immunosuppression: Positive HBsAg; positive skin PPD skin test or history of treatment for tuberculosis; known HIV infection
Where it's running
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University of Louisville Hospital
Louisville, Kentucky, United States Recruiting
Study contacts
- Principal investigator: Vatsalya Vatsalya, MD — Department of Medicine, University of Louisville
- Study coordinator: Amber Jackson, BS CCRP
- Email: amber.jackson.1@louisville.edu
- Phone: 502-852-2905
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.