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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: probiotics Clear all
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 21, 2024 · Synced Sep 18, 2026, 8:07 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effect of an Oral Probiotic Tablet on Oral Bacteria and Clinical Measurements (ProBiora3)

NCT01520974
View directory record Official record
Conditions
Oral Health
Interventions
ProBiora3 mints, Placebo tablet
Other
Lead sponsor
Oragenics, Inc.
Industry
Eligibility
18 Years to 35 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 1, 2012 · Synced Sep 18, 2026, 8:07 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Highly Processed Foods and Vascular Health

NCT05628350
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
No UPF controlled diet, High UPF controlled diet
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
40 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Sep 18, 2026, 8:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Enhancing Efficacy of Mango Polyphenols in Lean and Obese

NCT04970589
View directory record Official record
Conditions
Obesity
Interventions
Mango, Probiotics, Placebo
Other · Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Jul 20, 2021 · Synced Sep 18, 2026, 8:07 AM EDT
Not yet recruiting Not applicable Interventional

Probiotic Milk Drink for Gut and Brain Health in Older Adults and Caregivers

NCT07800195
View directory record Official record
Conditions
Alzheimer Disease Related Dementia
Interventions
Probiotic Fermented Milk (PFM) Drink, Placebo
Dietary Supplement
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 18, 2026, 8:07 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Assessing the Gut Microbiome and Its Association With Pediatric Stress and Cognition

NCT06269614
View directory record Official record
Conditions
Autism Spectrum Disorder, Adverse Childhood Experiences, Stress Reaction
Interventions
Probiotic
Dietary Supplement
Lead sponsor
Nova Southeastern University
Other
Eligibility
4 Years to 95 Months
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Davie, Florida
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Sep 18, 2026, 8:07 AM 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 18, 2026, 8:07 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Yogurt Supplementation to Alter Bone Biomarkers, the Gut Microbiota and Inflammation in Older Adults

NCT05350579
View directory record Official record
Conditions
Osteoporosis, Inflammation
Interventions
Yogurt Intervention
Other
Lead sponsor
University of Massachusetts, Lowell
Other
Eligibility
50 Years and older
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lawrence, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 27, 2022 · Synced Sep 18, 2026, 8:07 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Probiotic on the Innate and Adaptive Host Response to Rhinovirus (EPIARR)

NCT01669603
View directory record Official record
Conditions
Common Cold
Interventions
Bifidobacterium lactis Bl-04, Placebo, Rhinovirus
Dietary Supplement · Biological
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 60 Years
Enrollment
789 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 24, 2017 · Synced Sep 18, 2026, 8:07 AM EDT
Terminated Phase 1Phase 2 Interventional

The Effects of Whole Food Intervention on Mucositis in Patients Treated for Head and Neck Cancer

NCT02575313
View directory record Official record
Conditions
Mucositis
Interventions
Whole Food Intervention
Dietary Supplement
Lead sponsor
Providence Health & Services
Other
Eligibility
18 Years and older
Enrollment
10 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 13, 2015 · Synced Sep 18, 2026, 8:07 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 Jan 31, 2019 · Synced Sep 18, 2026, 8:07 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

The PRIDE Study Probiotics on Regulation and Improving Digestive hEalth

NCT01203462
View directory record Official record
Conditions
Digestive Irregularity, Digestive Discomfort, History of Straining During Bowel Movements, History of Hard or Lumpy Stools
Interventions
Probiotic strain of Bifidobacterium, No Bifidobacterium
Other
Lead sponsor
Georgetown University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 10, 2013 · Synced Sep 18, 2026, 8:07 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 8, 2017 · Synced Sep 18, 2026, 8:07 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ultra-processed Food Consumption, Gut Microbiota, and Glucose Homeostasis

NCT05358171
View directory record Official record
Conditions
Insulin Sensitivity, 24-hour Glucose Control
Interventions
HIgh UPF controlled diet, No UPF controlled diet
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
40 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Sep 18, 2026, 8:07 AM 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 19, 2022 · Synced Sep 18, 2026, 8:07 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Diabetic Cardiomyopathy and Heart Failure

NCT05571865
View directory record Official record
Conditions
Diabetic Cardiomyopathies, Heart Failure
Interventions
Probiotic
Dietary Supplement
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 30, 2025 · Synced Sep 18, 2026, 8:07 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 9, 2019 · Synced Sep 18, 2026, 8:07 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Clinical Trial Evaluating the Viability of L. Casei + Fish Oil Capsules

NCT01464814
View directory record Official record
Conditions
Signs and Symptoms, Digestive
Interventions
probiotic plus fish oil capsule, Fish oil capsule
Dietary Supplement
Lead sponsor
Nutrition 21, Inc.
Industry
Eligibility
21 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Pembroke Pines, Florida
Source: ClinicalTrials.gov public record
Updated Nov 15, 2011 · Synced Sep 18, 2026, 8:07 AM 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 18, 2026, 8:07 AM EDT
Completed No phase listed Observational Results available

Dietary Supplement With and Without a Probiotic and/or Antibiotic

NCT05141903
View directory record Official record
Conditions
Healthy Adults
Interventions
Antibiotic, HMO Concentrate, Probiotic, Food Supplement
Dietary Supplement
Lead sponsor
Prolacta Bioscience
Industry
Eligibility
18 Years to 75 Years
Enrollment
92 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Feb 16, 2025 · Synced Sep 18, 2026, 8:07 AM EDT
Not yet recruiting Not applicable Interventional

Impact of a Human Origin Heat Inactivated Probiotic-Lactobacillus Paracasei D3.5 (LpD3.5) as Dietary Supplement on Gut Mucin and Intestinal Permeability in Adults With IBD

NCT07017959
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
LpD3.5 supplementation., Placebo
Dietary Supplement
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 11, 2025 · Synced Sep 18, 2026, 8:07 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Bacillus Velezensis DSM 33864 for Reduction of the Risk of Recurrent Clostridioides Difficile Infections

NCT05606159
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
Bacillus velezensis DSM 33864, Placebo
Dietary Supplement
Lead sponsor
Novozymes A/S
Industry
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 21, 2024 · Synced Sep 18, 2026, 8:07 AM EDT
Terminated Not applicable Interventional

Dose Ranging Study With the Probiotic Combination (VSL#3) in Diarrhea IBS

NCT00179582
View directory record Official record
Conditions
IBS
Interventions
VSL#3
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 26, 2019 · Synced Sep 18, 2026, 8:07 AM EDT
Recruiting Not applicable Interventional

Efficacy of Viome's Precision Nutrition Program Towards Reducing HbA1c

NCT05465616
View directory record Official record
Conditions
Diabetes, Pre Diabetes
Interventions
Viome's Precision Nutrition Program (VPNP)
Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jan 23, 2025 · Synced Sep 18, 2026, 8:07 AM EDT