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Showing 1–24 of 28 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Probiotic Therapy Clear all
Completed No phase listed Observational Accepts healthy volunteers

Novel Probiotic Treatment for Prevention of Recurrent UTIs in Children

NCT01696227
View directory record Official record
Conditions
Recurrent UTIs, Catheter-Related Infections
Interventions
Nissle 1917
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 14, 2014 · Synced Jun 10, 2026, 10:47 PM EDT
Completed Not applicable Interventional

Prebiotic vs Probiotic in Multiple Sclerosis

NCT04038541
View directory record Official record
Conditions
Multiple Sclerosis, Clinically Isolated Syndrome (CIS)
Interventions
Prebiotics (Prebiotin Prebiotic Fiber Stick Pac), Probiotics (Visbiome®)
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
New York, New York • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Jun 10, 2026, 10:47 PM EDT
Recruiting Early Phase 1 Interventional

Effects of a Probiotic Intervention on the Gut and Vaginal Microbiome in Patients With Advanced or Recurrent Ovarian Cancer Undergoing Treatment With Platinum Chemotherapy

NCT07144826
View directory record Official record
Conditions
Advanced Ovarian Carcinoma, Recurrent Ovarian Carcinoma, Stage II Ovarian Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage IV Ovarian Cancer AJCC v8
Interventions
Biospecimen Collection, Placebo Administration, Probiotic, Questionnaire Administration
Procedure · Drug · Dietary Supplement + 1 more
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Jun 10, 2026, 10:47 PM EDT
Completed No phase listed Observational

Patient-Reported Probiotic Use During Periodontal Therapy in Periodontitis

NCT07619040
View directory record Official record
Conditions
Periodontitis, Probiotic, Oral Hygiene, Oral Health, Periodontal Therapy
Interventions
non surgical periodontal therapy
Procedure
Lead sponsor
Medipol University
Other
Eligibility
18 Years to 70 Years
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Jun 10, 2026, 10:47 PM 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 Jun 10, 2026, 10:47 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Safety and Efficacy of FMT in Individuals With One or More Recurrences of Clostridium Difficile Associated Disease (CDAD)

NCT03548051
View directory record Official record
Conditions
Clostridial Infection, Dysbiosis, Probiotic Therapy
Interventions
Fecal Microbiota Transplantation (FMT), Saline
Procedure · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
3
States / cities
Decatur, Georgia • Durham, North Carolina • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 1, 2022 · Synced Jun 10, 2026, 10:47 PM EDT
Completed Phase 1Phase 2 Interventional

Beginning Assessment of Cutaneous Treatment Efficacy of Roseomonas in Atopic Dermatitis

NCT03018275
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Roseomonas mucosa
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 99 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Jun 10, 2026, 10:47 PM EDT
Recruiting Phase 1Phase 2 Interventional

Probiotics and Gut Health

NCT03418857
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Yogurt smoothie with BB-12, Yogurt smoothie
Drug
Lead sponsor
Penn State University
Other
Eligibility
55 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 13, 2021 · Synced Jun 10, 2026, 10:47 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 5, 2019 · Synced Jun 10, 2026, 10:47 PM EDT
Recruiting Phase 2 Interventional

Topical Probiotic Sinus Irrigations for Treating Chronic Sinusitis

NCT05427695
View directory record Official record
Conditions
Chronic Rhinosinusitis (Diagnosis)
Interventions
Lactobacillus sakei proBio65, Isotonic Saline Solution
Drug · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Jun 10, 2026, 10:47 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 19, 2016 · Synced Jun 10, 2026, 10:47 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 15, 2024 · Synced Jun 10, 2026, 10:47 PM EDT
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 5, 2015 · Synced Jun 10, 2026, 10:47 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 3, 2022 · Synced Jun 10, 2026, 10:47 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 30, 2025 · Synced Jun 10, 2026, 10:47 PM EDT
Completed Not applicable Interventional

Fermented Milk Product With Probiotic and Its Impact on Mood of Patients With Treatment Resistant Depression

NCT03317678
View directory record Official record
Conditions
Depression
Interventions
BioKefir, Non-fermented milk
Dietary Supplement
Lead sponsor
Rush University Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 8, 2022 · Synced Jun 10, 2026, 10:47 PM EDT
Withdrawn Phase 2 Interventional

Probiotic Supplementation in Preventing Treatment-Related Diarrhea in Patients With Cancer Undergoing Chemotherapy

NCT01644097
View directory record Official record
Conditions
Diarrhea, Unspecified Adult Solid Tumor, Protocol Specific
Interventions
Lactobacillus plantarum strain 299v, Lactobacillus acidophilus probiotic, placebo, laboratory biomarker analysis, questionnaire administration, quality-of-life assessment, Bifidobacterium lactis probiotic supplement
Dietary Supplement · Other · Procedure
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 13, 2014 · Synced Jun 10, 2026, 10:47 PM EDT
Completed Phase 2 Interventional Results available

The Probiotic Study: Using Bacteria to Calm Your Mind

NCT02711800
View directory record Official record
Conditions
Anxiety, Abdominal Pain
Interventions
Lactobacillus rhamnosus
Drug
Lead sponsor
Nancy Zucker
Other
Eligibility
9 Years to 13 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jun 10, 2026, 10:47 PM EDT
Completed No phase listed Observational

Observational Study of Kibow Biotics in Chronic Kidney Failure Patients on Dialysis

NCT01450709
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Kibow Biotics
Dietary Supplement
Lead sponsor
Kibow Pharma
Industry
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 19, 2019 · Synced Jun 10, 2026, 10:47 PM EDT
Completed Not applicable Interventional Results available

Probiotic Therapy for Children and Adults With Autism Spectrum Disorder

NCT04655326
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
Flore
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
30 Months to 75 Years
Enrollment
296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Jun 10, 2026, 10:47 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 13, 2023 · Synced Jun 10, 2026, 10:47 PM EDT
Terminated Not applicable Interventional Results available

Novel Therapies in Moderately Severe Acute Alcoholic Hepatitis

NCT01922895
View directory record Official record
Conditions
Acute Alcoholic Hepatitis
Interventions
Lactobacillus Rhamnosus GG, Placebo for Probiotic
Dietary Supplement · Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 70 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
3
States / cities
Louisville, Kentucky • Cleveland, Ohio • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Jun 10, 2026, 10:47 PM EDT
Completed Phase 2 Interventional Results available

Effects of the Probiotic Visbiome Extra Strength on Gut Microbiome & Immune Activation Markers

NCT02706717
View directory record Official record
Conditions
HIV-1 Infection
Interventions
Visbiome Extra Strength, Placebo
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
18 Years and older
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
24
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 5, 2020 · Synced Jun 10, 2026, 10:47 PM 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 8, 2025 · Synced Jun 10, 2026, 10:47 PM EDT