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ClinicalTrials.gov public records Last synced Oct 17, 2026, 9:27 AM EDT

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Showing 121–144 of 437 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Probiotic Clear all
Completed Not applicable Interventional Accepts healthy volunteers

A Randomized-Controlled Trial to Examine the Effects of a Daily Probiotic Supplement on Common Symptoms of Menopause

NCT06148714
View directory record Official record
Conditions
Menopause
Interventions
Provitalize Natural Menopause Probiotic, Placebo
Dietary Supplement · Other
Lead sponsor
Maneuver Marketing
Industry
Eligibility
45 Years to 65 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Nov 20, 2024 · Synced Oct 17, 2026, 9:27 AM 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 17, 2026, 9:27 AM 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 17, 2026, 9:27 AM EDT
Recruiting Not applicable Interventional

The GLUCID Study: Effect of Alcohol Reduction and Probiotic Interventions on Cognition and Brain Glucose Metabolism in Normal Aging Adults Who Are High-Risk Alcohol Drinkers

NCT07415707
View directory record Official record
Conditions
Aging, Alcohol Drinking
Interventions
Visbiome, Motivational Interviewing, Placebo
Dietary Supplement · Behavioral · Other
Lead sponsor
University of Miami
Other
Eligibility
65 Years to 84 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Influence of a Delivery System on the Efficacy of a Probiotic Intervention

NCT01399996
View directory record Official record
Conditions
Delayed Transit Time, Irregular Bowel Function
Interventions
Yogurt smoothie without probiotic, Yogurt smoothie with probiotic added post fermentation, Yogurt smoothie with probiotic added pre-fermentation, A capsule containing the probiotic
Dietary Supplement
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 40 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Oct 17, 2026, 9:27 AM 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 17, 2026, 9:27 AM 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 17, 2026, 9:27 AM EDT
Completed Phase 2 Interventional

Probiotics for Clostridium Difficile Infection in Older Adults

NCT01680874
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Novel Probiotic on Gastrointestinal Health in Generally Healthy Adults

NCT05595980
View directory record Official record
Conditions
Gastrointestinal Health, Immune Health, Digestive Health
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
BIO-CAT Microbials, LLC
Industry
Eligibility
30 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 6, 2023 · Synced Oct 17, 2026, 9:27 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 22, 2024 · Synced Oct 17, 2026, 9:27 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Benefits of Natural Medicine, Vitamin IV Therapy and Supplements: Maintaining Good Health Through Nature

NCT05067998
View directory record Official record
Conditions
Anxiety Disorders and Symptoms, Fibromyalgia, Arthritis, Chronic Pain, Hypertension,Essential
Interventions
IV Vitamin Infused Therapy Treatment, Herbal medicine
Dietary Supplement · Drug
Lead sponsor
Faith A. Richardson
Other
Eligibility
21 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Dover, Delaware
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 17, 2026, 9:27 AM EDT
Withdrawn Early Phase 1 Interventional

Novel Supplement-based Therapy for the Treatment of Small Intestinal Bacterial Overgrowth

NCT03420976
View directory record Official record
Conditions
Small Intestinal Bacterial Overgrowth
Interventions
Novel Supplement Based Therapy
Dietary Supplement
Lead sponsor
Atrium Innovations
Industry
Eligibility
19 Years to 84 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Oxford, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 12, 2021 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Probiotics (L. Gasseri, B. Bifidum, B. Longum) on Immune and Intestinal Health in Healthy Older Adults

NCT01662206
View directory record Official record
Conditions
Healthy
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
65 Years to 80 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 17, 2013 · Synced Oct 17, 2026, 9:27 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Clinical Study to Assess the Effects of Prebiotic and Probiotic Supplement

NCT06794619
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with actives
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 50 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Jul 15, 2025 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized, Double-blind, Placebo-controlled Trial Investigating the Role of a Personal Care Product on Vaginal Health

NCT05659745
View directory record Official record
Conditions
Vaginal Personal Care
Interventions
VM-02, Commercial Oral Probiotic Competitor, VM-02 Placebo
Other · Dietary Supplement
Lead sponsor
Seed Health
Industry
Eligibility
18 Years and older · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Venice, California
Source: ClinicalTrials.gov public record
Updated May 31, 2023 · Synced Oct 17, 2026, 9:27 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Vascular Aging and Lp299v Study in Healthy Adults

NCT05296395
View directory record Official record
Conditions
Vascular Aging
Interventions
Lactobacillus Plantarum 299v in fermented oat drink, Heat-Killed Placebo control fermented drink
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
50 Years to 99 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Novel Nutritional Product on Nutrient Status and Digestive Health

NCT06181214
View directory record Official record
Conditions
Gastrointestinal Microbiome, Nutrition, Healthy, Healthy Aging
Interventions
AG1 - Nutritional Supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 22, 2024 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional

Effect of a Probiotic Mixture on the Gut Microbiome and Fatigue in Patients With Quiescent Inflammatory Bowel Disease

NCT03266484
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Crohn Disease, Ulcerative Colitis
Interventions
Probiotic Mixture, Placebo
Dietary Supplement
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 17, 2026, 9:27 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 28, 2022 · Synced Oct 17, 2026, 9:27 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 17, 2026, 9:27 AM EDT
Recruiting Phase 2 Interventional

5-strain Probiotic Formulation in HR-positive Breast Cancer Receiving Aromatase Inhibitor to Prevent Bone Loss

NCT07044310
View directory record Official record
Conditions
Anatomic Stage 0 Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Hormone Receptor-Positive Breast Carcinoma
Interventions
Biospecimen Collection, Bone Mineral Density Test, Questionnaire Administration, WBF-038
Procedure · Other · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of BB-12 Supplemented Strawberry Yogurt For Healthy Adults on Antibiotics

NCT00848003
View directory record Official record
Conditions
Adults on Antibiotics
Interventions
Bifidobacterium animalis subsp. lactis strain BB-12, Placebo
Drug
Lead sponsor
Georgetown University
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 20, 2013 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Lactobacillus Plantarum KABP-51 Probiotic on Body Composition, Microbiome and Mood in Healthy Overweight Adults

NCT06808061
View directory record Official record
Conditions
Weight Loss, Mood
Interventions
Lactobacillus plantarum, Placebo
Dietary Supplement
Lead sponsor
3 Waves Wellness
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Plymouth, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced Oct 17, 2026, 9:27 AM EDT
Completed Not applicable Interventional

Pilot Study Lp299v Supplementation in Chronic Heart Failure

NCT05752760
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction, Heart Failure, Systolic, Heart Failure With Preserved Ejection Fraction, Heart Failure, Diastolic
Interventions
Lactobacillus Plantarum 299v Freeze Dried Capsule, Freeze Dried Potato Starch Capsule
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
21 Years to 89 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 17, 2026, 9:27 AM EDT