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Showing 1–24 of 41 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Culturelle probiotic Clear all
Completed Phase 2 Interventional Results available

The Probiotic Study: Using Bacteria to Calm Your Mind

NCT02711800
View directory record Official record
Conditions
Anxiety, Abdominal Pain
Interventions
Lactobacillus rhamnosus
Drug
Lead sponsor
Nancy Zucker
Other
Eligibility
9 Years to 13 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Sep 19, 2026, 5:01 PM EDT
Withdrawn Not applicable Interventional

Probiotic Use in Patients With Prior COPD Exacerbation

NCT02185092
View directory record Official record
Conditions
COPD, Obstructive Lung Disease
Interventions
Lactobacillus GG, Sugar pill
Dietary Supplement · Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 99 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 22, 2017 · Synced Sep 19, 2026, 5:01 PM EDT
Terminated Phase 1 Interventional

Probiotic Lactobacillus GG to Eliminate VRE Colonization

NCT00756262
View directory record Official record
Conditions
Vancomycin Resistant Enterococcal Colonization
Interventions
Lactobacillus GG or Culturelle
Biological
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 4, 2024 · Synced Sep 19, 2026, 5:01 PM EDT
Recruiting Phase 2 Interventional

Intravesical LGG VS Saline Bladder Wash RCT

NCT05230511
View directory record Official record
Conditions
Spinal Cord Injuries, Neurogenic Bladder
Interventions
Lactobacillus RhamnosusGG, Saline bladder wash
Drug
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 19, 2026, 5:01 PM EDT
Terminated Not applicable Interventional Results available

Novel Therapies in Moderately Severe Acute Alcoholic Hepatitis

NCT01922895
View directory record Official record
Conditions
Acute Alcoholic Hepatitis
Interventions
Lactobacillus Rhamnosus GG, Placebo for Probiotic
Dietary Supplement · Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 70 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
3
States / cities
Louisville, Kentucky • Cleveland, Ohio • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional

Maternal Probiotic Supplementation for Improved Outcomes in Infants of Diabetic Mothers

NCT05467150
View directory record Official record
Conditions
Infant of Diabetic Mother
Interventions
Probiotic Supplement
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Rhamnosus GG ATCC 53103 (LGG) in Healthy Volunteers

NCT00934453
View directory record Official record
Conditions
Healthy
Interventions
Lactobacillus rhamnosus GG ATCC 53103, Placebo
Biological
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Sep 19, 2026, 5:01 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Symbiotic Use in Post-Bariatric Surgery Patients

NCT06252558
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Symbiotic, Placebo
Dietary Supplement
Lead sponsor
University of North Florida
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional Results available

Lactobacillus Rhamnosus GG in Reducing Incidence of Graft-Versus-Host Disease in Patients Who Have Undergone Donor Stem Cell Transplant

NCT02144701
View directory record Official record
Conditions
Graft Versus Host Disease
Interventions
Lactobacillus rhamnosus GG, laboratory biomarker analysis was not performed because of no differences in the clinical outcomes
Dietary Supplement · Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 26, 2021 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional Results available

Probiotics and Antibiotic Associated Diarrhea in Pediatric Complicated Appendicitis

NCT04529980
View directory record Official record
Conditions
Appendicitis, Appendicitis; Perforation
Interventions
Lactobacillus rhamnosus GG (LGG) Probiotic, Placebo
Dietary Supplement
Lead sponsor
Children's Health
Other
Eligibility
4 Years to 18 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 4 Interventional Results available

Probiotics to Promote Intestinal Health

NCT02046512
View directory record Official record
Conditions
Communicable Diseases, Infection, Anti-Infective Agents, Therapeutic Uses, Pharmacologic Actions
Interventions
Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 3, 2022 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 2 Interventional

Probiotic (LGG) for Veterans With PTSD

NCT04150380
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Inflammation
Interventions
Lactobacillus rhamnosus GG (LGG; ATCC strain 53103; CRMTS #11272; PTS #3766), Placebo
Biological · Other
Lead sponsor
VA Eastern Colorado Health Care System
Federal
Eligibility
18 Years to 60 Years
Enrollment
383 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotic on Psychological and Cognitive Effects

NCT03080818
View directory record Official record
Conditions
Aging
Interventions
Probiotic - Lactobacillus Rhamnosus GG, Placebo
Dietary Supplement · Other
Lead sponsor
Kent State University
Other
Eligibility
55 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Kent, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 19, 2020 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Probiotic and Prebiotic Combinations on Premature Infants

NCT00282113
View directory record Official record
Conditions
Premature Infants, Stool Bacterial Composition, Growth
Interventions
ProBioPlus, Culturelle, Placebo
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
Up to 7 Days
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jan 27, 2010 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Impact of Emergency Department Probiotic (LGG) Treatment of Pediatric Gastroenteritis

NCT01773967
View directory record Official record
Conditions
Gastroenteritis
Interventions
LGG, micro-crystalline cellulose
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
3 Months to 48 Months
Enrollment
971 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
10
States / cities
Sacramento, California • Washington D.C., District of Columbia • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2019 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 1 Interventional

Effect of Lactobacillus Probiotic on Healthy Adults

NCT00748748
View directory record Official record
Conditions
Antibiotic-associated Diarrhea
Interventions
Culturelle
Biological
Lead sponsor
Fargo VA Medical Center
Federal
Eligibility
18 Years to 64 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 3, 2012 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Impact of Probiotics on Urinary Symptoms in Spinal Cord Injury SCI and SB

NCT02748356
View directory record Official record
Conditions
Lower Urinary Tract Symptoms
Interventions
Lactobacillus
Drug
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
6 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Apr 23, 2020 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 4 Interventional

Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial

NCT02462590
View directory record Official record
Conditions
Ventilator Associated Pneumonia, Infections, C-Difficile, Antibiotic-associated Diarrhea, Diarrhea
Interventions
L. rhamnosus GG - Probiotic, Placebo - Microcrystalline Cellulose
Drug
Lead sponsor
McMaster University
Other
Eligibility
18 Years and older
Enrollment
2,650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
2
States / cities
Rochester, Minnesota • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 16, 2020 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 4 Interventional Results available

The Use of Probiotics to Evaluate Colonization With Antimicrobial Resistant Bacteria

NCT01551186
View directory record Official record
Conditions
Infectious Disease of Digestive Tract
Interventions
Lactobacillus rhamnosus GG
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 16, 2018 · Synced Sep 19, 2026, 5:01 PM EDT
Withdrawn Phase 2 Interventional

Growth Hormone and Exclusion Diet Therapy in Juvenile Crohn's Disease

NCT01647412
View directory record Official record
Conditions
Crohn's Disease
Interventions
Growth Hormone, Nutraceutical Combination, Exclusion Diet, Placebo Growth Hormone
Drug · Dietary Supplement · Other
Lead sponsor
Columbia University
Other
Eligibility
10 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2015 · Synced Sep 19, 2026, 5:01 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Do Probiotics Improve Recovery From Acute Constipation in Kids?

NCT05734833
View directory record Official record
Conditions
Constipation
Interventions
Culturelle Probiotic + Fiber, Placebo
Dietary Supplement · Other
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
6 Months to 8 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 13, 2025 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional

Probiotic Supplementation on Weight Loss

NCT03832439
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Probiotic, microcrystalline cellulose
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 20, 2022 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Lactobacillus Rhamnosus GG (LGG) on Infant Colic

NCT01279265
View directory record Official record
Conditions
Colic, Inflammation
Interventions
Nutramigen with Enflora, Nutramigen A+
Dietary Supplement
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
3 Weeks to 3 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Sep 19, 2026, 5:01 PM EDT
Completed Phase 2 Interventional

Probiotics: Prevention of Severe Pneumonia and Endotracheal Colonization Trial (PROSPECT): A Feasibility Clinical Trial

NCT01782755
View directory record Official record
Conditions
Ventilator Associated Pneumonia (VAP), Other Infections, Antibiotic-Associated Diarrhea, C-Difficile, Duration of Mechanical Ventilation, Length of ICU Stay, Length of Hospital Stay, ICU and Hospital Mortality
Interventions
L. rhamnosus GG - Probiotic, Placebo - Microcrystalline Cellulose
Drug · Other
Lead sponsor
McMaster University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Rochester, Minnesota • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Sep 19, 2026, 5:01 PM EDT