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ClinicalTrials.gov public records Last synced Oct 30, 2026, 4:26 PM EDT

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Showing 169–192 of 192 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Lactobacillus Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Probiotic Supplementation on Immune Function in Healthy Infants

NCT01542320
View directory record Official record
Conditions
Inflammation
Interventions
Lactobacillus reuteri DSM 17938, Placebo
Dietary Supplement · Other
Lead sponsor
Emory University
Other
Eligibility
6 Weeks to 32 Weeks
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 6, 2015 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Probiotics on Health-related Quality of Life in College Students With Upper Respiratory Infections

NCT01657643
View directory record Official record
Conditions
Upper Respiratory Infection
Interventions
Probiotics, placebo
Dietary Supplement
Lead sponsor
University of Medicine and Dentistry of New Jersey
Other
Eligibility
18 Years to 25 Years
Enrollment
231 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Framingham, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 28, 2015 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Prenatal Probiotic Intervention

NCT03240419
View directory record Official record
Conditions
Childhood Obesity, Maternal Obesity During Childbirth, Insulin Resistance, Inflammation
Interventions
Probiotics, Placebo
Dietary Supplement
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jan 18, 2022 · Synced Oct 30, 2026, 4:26 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 9, 2024 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Optimizing Overactive Bladder Treatment

NCT03904407
View directory record Official record
Conditions
Overactive Bladder
Interventions
Lactobacillus Probiotic Capsule, Matching Lactobacillus Probiotic Placebo Capsule
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
2
States / cities
Hillsborough, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated May 11, 2020 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Probiotics and Health-related Quality of Life in Individuals With Seasonal Allergies

NCT02349711
View directory record Official record
Conditions
Healthy
Interventions
Probiotic mixture, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 60 Years
Enrollment
224 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 9, 2017 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Effects of Flourish on Recurrent Urinary Tract Infection

NCT05397782
View directory record Official record
Conditions
Urinary Tract Infections
Interventions
BioNourish, a component of Flourish HEC
Device
Lead sponsor
Vaginal Biome Science
Other
Eligibility
18 Years to 52 Years · Female only
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 7, 2024 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional

Role of Probiotics in Treatment of Pediatric NAFLD Patients by Assessing With Fibroscan

NCT04671186
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease
Interventions
Culturelle (Lactobacillus rhamnosus strain GG), Placebo
Dietary Supplement · Other
Lead sponsor
Northwell Health
Other
Eligibility
5 Years to 18 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Apr 14, 2023 · Synced Oct 30, 2026, 4:26 PM EDT
Active, not recruiting Not applicable Interventional

Impact of Lp299v on Vascular Function in Patients With PASC

NCT05227170
View directory record Official record
Conditions
COVID-19
Interventions
Lactobacillus Plantarum 299v Freeze Dried Capsule, Freeze Dried Potato Starch Capsule
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 89 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 30, 2026 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety Study of Lactobacillus Administered Vaginally to Healthy Women

NCT00537576
View directory record Official record
Conditions
Bacterial Vaginosis
Interventions
Low dose LACTIN-V applicator, Medium dose LACTIN-V applicator, High dose LACTIN-V applicator, Low dose Placebo applicator, Medium dose Placebo, High dose Placebo applicator
Biological · Other
Lead sponsor
Osel, Inc.
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Oct 30, 2026, 4:26 PM EDT
Recruiting Early Phase 1 Interventional

Intravesical Lactobacillus Crispatus: Clinical Safety and Microbiome Evaluation

NCT07308808
View directory record Official record
Conditions
Spinal Cord Injuries (SCI), Neurogenic Bladder, Urinary Tract Infection (Diagnosis)
Interventions
Lactobacillus Crispatus, Saline bladder wash
Drug · Other
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Early Phase 1 Interventional

Impact of Probiotics on Oral Microbiota in Older Adults With Dysphagia

NCT03682094
View directory record Official record
Conditions
Dysphagia
Interventions
VSL#3
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
65 Years to 99 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 30, 2026, 4:26 PM EDT
Withdrawn Phase 2 Interventional

Probiotics in Girls With Spina Bifida

NCT00767988
View directory record Official record
Conditions
Urinary Tract Infection
Interventions
Urex-cap-5 (2x10^9 cfu each of Lactobacillus reuteri RC-14 and Lactobacillus rhamnosus GR-1), Placebo
Dietary Supplement · Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
3 Months to 17 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 15, 2015 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotics, Immunity, Stress, and QofL

NCT05063305
View directory record Official record
Conditions
Stress, Quality of Life
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Feb 3, 2022 · Synced Oct 30, 2026, 4:26 PM EDT
Withdrawn Not applicable Interventional

Monitoring the Effects of Probiotic Supplementation in Immunocompromised Kidney Transplanted Subjects

NCT05102461
View directory record Official record
Conditions
Diarrhea Caused by Drug, Dysbiosis
Interventions
Florajen Digestion Supplementation, Placebo Supplementation
Dietary Supplement
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 30, 2026, 4:26 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 6, 2019 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Pea Proteins on Muscle Damage and Recovery

NCT05657314
View directory record Official record
Conditions
Pea Proteins, Muscle Damage, Amino Acid Change
Interventions
Active Comparator
Dietary Supplement
Lead sponsor
The Center for Applied Health Sciences, LLC
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Phase 2 Interventional

Probiotics in the Treatment of Iron Deficiency in Children With Restless Leg Syndrome

NCT01617044
View directory record Official record
Conditions
Iron Deficiency, Restless Leg Syndrome
Interventions
Probiotics, Placebo
Dietary Supplement
Lead sponsor
Children's Hospitals and Clinics of Minnesota
Other
Eligibility
5 Years to 18 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 20, 2016 · Synced Oct 30, 2026, 4:26 PM EDT
Not listed Phase 1 Interventional

Bacteriuria Eradication Through Probiotics

NCT00717600
View directory record Official record
Conditions
Bacteriuria
Interventions
Lactobacillus reuteri RC-14 and Lactobacillus rhamnosus GR-1
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 18 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 17, 2008 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Probiotic for Oral Health (PRO Health) Study

NCT03748017
View directory record Official record
Conditions
Oral Microbiome
Interventions
Placebo-Control Supplement, Streptococcus-Containing Probiotic Supplement
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years to 45 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 28, 2023 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study of the Effects of Probiotics in Children Grades 1-3

NCT00635388
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Lactobacillus (Probiotic 1), Lactobacillus and Bifidobacterium (Probiotic 2)
Other
Lead sponsor
Procter and Gamble
Industry
Eligibility
5 Years to 9 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 16, 2009 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Fecal Recovery of the Probiotic Bacteria Lactobacillus Rhamnosus GG (LGG) and Bifidobacterium Animalis Subspecies Lactis BB-12 (BB-12) in Healthy Humans Following Daily Consumption of a Probiotic Supplement

NCT01757054
View directory record Official record
Conditions
Fecal Analysis
Interventions
ProNutrients Probiotic
Dietary Supplement
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 70 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 30, 2013 · Synced Oct 30, 2026, 4:26 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Safety Study of MucoCept-CVN

NCT07181486
View directory record Official record
Conditions
HIV -1 Infection
Interventions
Live Biotherapeutic Product L. jensenii 1153-1666, Placebo
Drug
Lead sponsor
Craig Cohen, MD, MPH
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 30, 2026, 4:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Single Group Study to Evaluate the Effects of a Vaginal Probiotic on Vaginal and Digestive Health

NCT06124313
View directory record Official record
Conditions
Irritable Bowel Syndrome, Vaginal Health
Interventions
Vaginal Probiotic
Dietary Supplement
Lead sponsor
Rael
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 23, 2024 · Synced Oct 30, 2026, 4:26 PM EDT