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ClinicalTrials.gov public records Last synced Oct 27, 2026, 6:22 AM EDT

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Showing 73–96 of 98 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Probiotic Group Clear all
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 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional

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

NCT06506357
View directory record Official record
Conditions
Vaginal Health, Women's Health
Interventions
Good Girl Probiotics
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 Jul 17, 2024 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Phase 3 Interventional Results available

Group B Streptococcus Response After Probiotic Exposure

NCT04721912
View directory record Official record
Conditions
Group B Strep Infection
Interventions
Probiotic dietary supplement
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older · Female only
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced Oct 27, 2026, 6:22 AM 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 27, 2026, 6:22 AM 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 27, 2026, 6:22 AM 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 13, 2015 · Synced Oct 27, 2026, 6:22 AM 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 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Measuring the Influence of Kefir on Children's Stools on Antibiotics (MILK)

NCT00481507
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Kefir, Placebo
Other
Lead sponsor
Georgetown University
Other
Eligibility
1 Year to 5 Years
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Oral Probiotic Supplementation on Group B Strep (GBS) Rectovaginal Colonization in Pregnancy

NCT01479478
View directory record Official record
Conditions
Infection, Pregnancy
Interventions
Placebo, Probiotic dietary supplement
Drug · Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
251 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
3
States / cities
Aptos, California • Santa Cruz, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2018 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Synbiotic Supplement on Metabolic & Cognitive Outcomes Among Older Adults

NCT06845995
View directory record Official record
Conditions
Older Adults, Bioelectrical Impedance, Appetite Hormones, Metabolic Health, Body Composition Measurement, Cognitive Health
Interventions
Synbiotic supplement
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
65 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Feb 25, 2025 · Synced Oct 27, 2026, 6:22 AM EDT
Completed No phase listed Observational

Clinical Trial to Survey Results of Flourish Vaginal Care System for Recurrent Bacterial Vaginosis

NCT03734523
View directory record Official record
Conditions
Bacterial Vaginosis, Vaginal Flora Imbalance
Interventions
Flourish Vaginal Care System
Combination Product
Lead sponsor
Vaginal Biome Science
Other
Eligibility
18 Years to 52 Years · Female only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Concord, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Gut Flora Dependent Metabolism of Dietary Phosphatidylcholine and Cardiovascular Disease

NCT01519310
View directory record Official record
Conditions
Nutrition
Interventions
Antibiotic (metronidazole and ciprofloxacin)/probiotic
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 3, 2016 · Synced Oct 27, 2026, 6:22 AM EDT
Completed No phase listed Observational

Probiotics/TPN in the NICU

NCT04977817
View directory record Official record
Conditions
Total Parenteral Nutrition, Necrotizing Enterocolitis of Newborn
Interventions
Similac Probiotic Tri-Blend
Dietary Supplement
Lead sponsor
Pediatrix
Other
Eligibility
Not listed
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Mesa, Arizona • Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 29, 2022 · Synced Oct 27, 2026, 6:22 AM 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 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of L. Paracasei Strain Shirota on Constipation in Healthy US Adults

NCT06014008
View directory record Official record
Conditions
Constipation
Interventions
Test product consumption group
Other
Lead sponsor
Yakult U.S.A. Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 22, 2024 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition Interventions to Support the Immune System in Response to Stress

NCT02053506
View directory record Official record
Conditions
Mitigation of Immune Function Decrements in Response to Stress
Interventions
Immune-enhancing nutritional beverage, Probiotics (BB-12), Placebo (for nutritional beverage and probiotic)
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 2, 2017 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Impact of CLB101TM️ on Gut Health in Healthy, Overweight Individuals

NCT07336615
View directory record Official record
Conditions
Gastrointestinal, Overweight , Obesity
Interventions
CLB101™️, Placebo, Placebo control
Dietary Supplement · Other
Lead sponsor
ClostraBio Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 27, 2026, 6:22 AM 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 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate a Probiotic in Healthy Subjects With a History of Abdominal Discomfort and Bloating

NCT01099696
View directory record Official record
Conditions
Abdominal Discomfort, Bloating
Interventions
B. infantis 35624, placebo
Dietary Supplement
Lead sponsor
Procter and Gamble
Industry
Eligibility
18 Years to 75 Years
Enrollment
302 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
10
States / cities
Chicago, Illinois • Rockford, Illinois • Indianapolis, Indiana + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2012 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Flourish Vaginal Care System to Establish Neovaginal Microbiome

NCT05372770
View directory record Official record
Conditions
Neovaginal Microbiome
Interventions
Flourish Vaginal Care system
Device
Lead sponsor
Vaginal Biome Science
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Hope, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 1, 2025 · Synced Oct 27, 2026, 6:22 AM 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 14, 2025 · Synced Oct 27, 2026, 6:22 AM EDT
Terminated Phase 1Phase 2 Interventional

The Effects of Whole Food Intervention on Mucositis in Patients Treated for Thoracic Cancer

NCT02575391
View directory record Official record
Conditions
Esophagitis
Interventions
Whole Food Intervention
Dietary Supplement
Lead sponsor
Providence Health & Services
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Oct 27, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotics Effect on the Female Urinary Microbiome ProFUM Trial (Probiotics Effect on the Female Urinary Microbiome)

NCT03250208
View directory record Official record
Conditions
Healthy
Interventions
Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Loyola University
Other
Eligibility
18 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 1, 2019 · Synced Oct 27, 2026, 6:22 AM 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 27, 2026, 6:22 AM EDT