Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 26, 2026, 8:26 AM EDT

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Showing 985–1008 of 1,015 matching trials from the live ClinicalTrials.gov search.
Conditions
Chronic Cough (CC), Gastroesophageal Reflux (GER)
Interventions
Esophago-gastro-duodenoscopy (EGD) with biopsy, Esophageal Impedance Monitoring (EIM)
Procedure
Lead sponsor
NYU Langone Health
Other
Eligibility
Up to 24 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Completed Not applicable Interventional Accepts healthy volunteers

Dairy Fat and Fermentation Study

NCT05840081
Conditions
Heart Diseases, Microbial Colonization, Inflammation
Interventions
Milk or yogurt beverage
Other
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

New Functional Ingredient for Oral Care

NCT07771907
Conditions
Oral Health Related Quality of Life (OHRQoL)
Interventions
Botanical A, Botanical B, Vehicle (Placebo solution)
Dietary Supplement
Lead sponsor
Access Business Group
Industry
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Grand Rapids, Michigan
Conditions
Diabetes
Interventions
Viome's Precision Nutrition Program (VPNP)
Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Bothell, Washington
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Lipidome and Microbiome Profile of Acne

NCT02713607
Conditions
Acne Vulgaris
Interventions
Doxycycline
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
15 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2027
U.S. locations
1
States / cities
Sacramento, California
Conditions
Malignant Neoplasm
Interventions
Biospecimen Collection, Return of Results, Survey Administration
Procedure · Other
Lead sponsor
New Mexico Cancer Research Alliance
Other
Eligibility
18 Years and older
Enrollment
1,001 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
1
States / cities
Albuquerque, New Mexico
Recruiting Not applicable Interventional Accepts healthy volunteers

Polyphenols and Cognitive Decline

NCT06507254
Conditions
Cognitive Decline, Cognitive Dysfunction
Interventions
Polyphenol Supplement, Placebo Supplement
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Dental Prosthesis
Interventions
MI Paste
Device
Lead sponsor
University of Iowa
Other
Eligibility
65 Years to 105 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Conditions
Urgency Urinary Incontinence
Interventions
InterStim Therapy
Device
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Spinal Cord Injuries, Gut Microbiome
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 85 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Conditions
Breast Cancer
Interventions
Blood & Fecal Collection
Other
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Little Rock, Arkansas
Conditions
Gut Microbiome
Interventions
B. infantis EVC001, Lactose
Other
Lead sponsor
Evolve BioSystems, Inc.
Industry
Eligibility
2 Months to 4 Months
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Davis, California
Conditions
Cutaneous T Cell Lymphoma
Interventions
APR-TD011 (RLF-TD011)
Combination Product
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Clostridium Difficile Infection
Interventions
SER-262, Placebo
Drug
Lead sponsor
Seres Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
22
States / cities
Athens, Alabama • Fountain Valley, California • La Mesa, California + 19 more
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Antibiotic Resistance and Microbiome in Children Aged 6-59 Months in Nouna, Burkina Faso

NCT03187834
Conditions
Child Development
Interventions
Azithromycin, Amoxicillin, Cotrimoxazole, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
6 Months to 59 Months
Enrollment
252 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Francisco, California
Conditions
Minimal Hepatic Encephalopathy
Interventions
rifaximin
Drug
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Richmond, Virginia
Completed No phase listed Observational Accepts healthy volunteers

A Novel Fecal Sample Collection Method for Metagenomic Analyses

NCT05172414
Conditions
Healthy
Interventions
No intervention
Other
Lead sponsor
Onegevity Health
Industry
Eligibility
18 Years to 79 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
Crohn Disease
Interventions
Soy based diet, Non-soy based diet
Other
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years to 65 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Conditions
Colorectal Cancer
Interventions
Vitamin D intervention, Placebo intervention
Dietary Supplement
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 79 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Waco, Texas
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effects of Gastric Acid on Colonic Microbiome

NCT01901276
Conditions
Clostridium Difficile
Interventions
Omeprazole 40 mg bid
Drug
Lead sponsor
Daniel Freedberg, MD
Other
Eligibility
18 Years and older · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Conditions
Metastatic Carcinoma, Stage IV Colorectal Cancer, Stage IVA Colorectal Cancer, Stage IVB Colorectal Cancer
Interventions
Biospecimen Collection, Laboratory Biomarker Analysis
Procedure · Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Diet Therapy
Interventions
Western Diet, CLEAN-MED
Other
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 60 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
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
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Stool Microbiome Using HyGIeaCare Prep

NCT04264923
Conditions
Stool Microbiome
Interventions
HyGIeaCare Prep
Other
Lead sponsor
HyGIeaCare, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Norfolk, Virginia