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ClinicalTrials.gov public records Last synced Oct 30, 2026, 2:36 PM EDT

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Showing 121–144 of 192 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Lactobacillus Clear all
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 21, 2022 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional

A Single Group Study to Evaluate the Effects of a Probiotic Vaginal Suppository on Vaginal Health.

NCT06565312
View directory record Official record
Conditions
Vaginal Health, Vaginal pH
Interventions
Flora Power Probiotic Vaginal Suppository
Dietary Supplement
Lead sponsor
Love Wellness
Industry
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 21, 2024 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 1 Interventional Results available

28-Day Daily-dose Crossover Study of the Safety and Tolerability of SB-121 (Lactobacillus Reuteri With Sephadex® and Maltose) in Subjects, Ages 15 to 45 Years, Diagnosed With Autistic Disorder

NCT04944901
View directory record Official record
Conditions
Autistic Disorder
Interventions
SB-121, Placebo
Drug
Lead sponsor
Scioto Biosciences, Inc.
Industry
Eligibility
15 Years to 45 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 25, 2024 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Lactobacillus Probiotic for Prevention of UTI

NCT03151967
View directory record Official record
Conditions
Urinary Tract Infections (UTI's)
Interventions
Lactobacillus crispatus CTV-05, Placebo
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 1, 2023 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Daily Supplementation of Lactobacillus Acidophilus MPH734, for One Week, Affect Acute (Immediate), Subacute (7 Days), and Post-treatment Discontinuation Lactose Metabolism, Gastrointestinal Symptoms, and Clinical Markers of Inflammation and Safety Compared to a Placebo

NCT04531033
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Lactobacillus acidophilus MPH734, Placebo
Dietary Supplement
Lead sponsor
Lemuel W. Taylor IV
Other
Eligibility
18 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Belton, Texas
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 30, 2026, 2:36 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 17, 2018 · Synced Oct 30, 2026, 2:36 PM EDT
Recruiting Phase 2 Interventional

LGG Supplementation in Patients With AUD and ALD

NCT05178069
View directory record Official record
Conditions
Alcohol Use Disorder, Alcohol-associated Liver Disease
Interventions
: Placebo for Probiotic, Lactobacillus Rhamnosus GG
Drug · Dietary Supplement
Lead sponsor
University of Louisville
Other
Eligibility
21 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 31, 2025 · Synced Oct 30, 2026, 2:36 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 4, 2022 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 2 Interventional

A Pilot Trial to Determine the Efficacy of Lactobacillus Rhamnosus for Reducing Colonization by Methicillin-resistant Staphylococcus Aureus (MRSA) (PROSE)

NCT01112995
View directory record Official record
Conditions
Infection
Interventions
Lactobacillus rhamnosus, Sugar pill (placebo)
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 5, 2015 · Synced Oct 30, 2026, 2:36 PM EDT
Recruiting Phase 1Phase 2 Interventional

Study of EXE-346 Live Biotherapeutic to Reduce High Bowel Movement Frequency in Subjects With an IPAA (PROF)

NCT05938465
View directory record Official record
Conditions
Ileal Pouch
Interventions
EXE-346, Placebo
Biological · Other
Lead sponsor
Exegi Pharma, LLC
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
8
States / cities
Los Angeles, California • Jacksonville, Florida • Grand Rapids, Michigan + 5 more
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional

Evaluation of Jarro-Dophilus EPS® Probiotic Formulations

NCT02693314
View directory record Official record
Conditions
Healthy
Interventions
Jarro-Dophilus EPS® (5 billion CFU/capsule), Jarro-Dophilus EPS® High Potency (25 billion CFU/capsule), Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 23, 2018 · Synced Oct 30, 2026, 2:36 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 24, 2020 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotics on Stress-associated Gastrointestinal Function in University Students

NCT03056846
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Probiotic Combination, Bifidobacterium bifidum, Bifidobacterium longum
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
634 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 25, 2019 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Study of Probiotics in Pre-diabetic Adolescents

NCT03109587
View directory record Official record
Conditions
Obesity, Childhood
Interventions
Vivomixx, Placebo
Dietary Supplement
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
13 Years to 19 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 21, 2020 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 2 Interventional Results available

Intravaginal LACTIN-V for Prevention of Recurrent Urinary Tract Infection

NCT00305227
View directory record Official record
Conditions
Urinary Tract Infection
Interventions
Lactin-V, Placebo
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 14, 2023 · Synced Oct 30, 2026, 2:36 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 20, 2020 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 1 Interventional

Probiotic Lactobacillus GG (LGG) in Patients With Minimal Hepatic Encephalopathy

NCT00992290
View directory record Official record
Conditions
Minimal Hepatic Encephalopathy
Interventions
Lactobacillus GG, Placebo
Biological
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 7, 2014 · Synced Oct 30, 2026, 2:36 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 17, 2020 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 2 Interventional Results available

Impact of Probiotics for Reducing Infections in Veterans: The IMPROVE Study

NCT01321606
View directory record Official record
Conditions
Anti-biotic Resistance
Interventions
Lactobacillus rhamnosus HN001, sugar pill (placebo)
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 3, 2018 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modulation of Type 1 Diabetes Susceptibility Through the Use of Probiotics

NCT03423589
View directory record Official record
Conditions
Type1diabetes, Type1 Diabetes Mellitus
Interventions
VSL#3
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
5 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Oct 30, 2026, 2:36 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 28, 2010 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Effect of L. Reuteri on Biomarkers of Inflammation in Healthy Infants With Colic

NCT01849991
View directory record Official record
Conditions
Gastrointestinal, Colic
Interventions
Lactobacillus reuteri, Placebo
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
3 Weeks to 3 Months
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 30, 2018 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of 3 Probiotic Strains on Bile Acids, Satiety, and Inflammation

NCT01879098
View directory record Official record
Conditions
Healthy
Interventions
Probiotic: Bacillus subtilis, Lactobacillus plantarum, Bifidobacterium animalis, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
35 Years to 65 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 10, 2014 · Synced Oct 30, 2026, 2:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of an Oral Intervention for Sexual Health in Transgender Men

NCT06470906
View directory record Official record
Conditions
Vaginal Dysbiosis, Vaginal Disease, Molecular-bacterial Vaginosis
Interventions
Probiotic Group, Placebo Group
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 30, 2026, 2:36 PM EDT