Independent directory Public ClinicalTrials.gov records United States
Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 24, 2026, 11:04 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 673–696 of 1,015 matching trials from the live ClinicalTrials.gov search.
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Manipulating the Gut Microbiome Study

NCT03181828
Conditions
Urea Cycle Disorder
Interventions
Acetohydroxamic Acid Oral Tablet, No treatment
Drug · Other
Lead sponsor
Nicholas Ah Mew
Other
Eligibility
18 Years to 60 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Completed No phase listed Observational Accepts healthy volunteers

Pediatric Metabolism and Microbiome Repository

NCT02959034
Conditions
Pediatric Obesity
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
10 Years to 23 Years
Enrollment
486 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Durham, North Carolina
Recruiting Phase 1Phase 2 Interventional

Vaginal Microbiota Transplant

NCT04046900
Conditions
Recurrent Bacterial Vaginosis
Interventions
Vaginal microbiome transplant, Oral Metronidazole, Sterile saline
Biological · Drug · Other
Lead sponsor
Douglas Kwon
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
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
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Feasibility of Rice Bran Supplementation in Children

NCT02557373
Conditions
Dietary Rice Bran Supplementation
Interventions
Vitamin A, Rice Bran + Vitamin A
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
4 Months to 10 Months
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Fort Collins, Colorado
Conditions
Aging
Interventions
Western Diet, Non-Western Diet
Other
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
18 Years to 79 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Boulder, Colorado
Conditions
Human Immunodeficiency Virus, Human Papillomavirus-Related Anal Squamous Cell Carcinoma, High-Grade Squamous Intraepithelial Lesions
Interventions
Biospecimen Collection, Questionnaires
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
San Francisco, California
Conditions
Mental Health, Depression, Anxiety
Interventions
VIOME Precision Nutrition Program, VIOME-designed condition-based supplements
Combination Product · Dietary Supplement
Lead sponsor
Viome
Industry
Eligibility
25 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Bothell, Washington
Conditions
Bronchiectasis, Fungal Infection of Upper Respiratory Tract
Interventions
Itraconazole 200 mg
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Rochester, Minnesota
Conditions
Obesity, Type2 Diabetes
Interventions
no intervention used
Other
Lead sponsor
North Dakota State University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Fargo, North Dakota
Recruiting Not applicable Interventional Accepts healthy volunteers

Personalized Responses to Dietary Composition Trial 3

NCT04735835
Conditions
Diabetes, Heart Diseases, Diet Habit, Diet Modification, Healthy, Obesity, Metabolism, Microbial Colonization
Interventions
Dietary Intervention
Other
Lead sponsor
Zoe Global Limited
Other
Eligibility
18 Years and older
Enrollment
250,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2030
U.S. locations
1
States / cities
Needham, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers

Corn and Heart Health Study

NCT03967990
Conditions
Gut Microbiome, Cholesterol, LDL, Cholesterol, HDL
Interventions
Refined cornmeal flour, 50/50 refined cornmeal-bran mix, Whole grain cornmeal flour
Other
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 70 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Phoenix, Arizona
Active, not recruiting Phase 1 Interventional

CP101 for the Treatment of Ulcerative Colitis

NCT05852574
Conditions
Ulcerative Colitis
Interventions
CP-101, CP-101 + Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Crohn's Disease
Interventions
Specific carbohydrate diet, Elemental diet
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Antibacterial Mouthwash on Muscle Function in Healthy Young Men and Women

NCT04095442
Conditions
Quadriceps Muscle
Interventions
Cepacol, Tom's Natural Mouthwash
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 30 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Conditions
Kidney Transplant Symptoms, Gut Microbiome
Interventions
no intervention, observational
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Obesity
Interventions
Not listed
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 59 Years · Female only
Enrollment
221 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Completed Not applicable Interventional Accepts healthy volunteers

Dealcoholized Muscadine Wine and Skin Health in Women

NCT04614753
Conditions
Skin Health
Interventions
Dealcoholized Muscadine Wine, Control Beverage
Other
Lead sponsor
University of Florida
Other
Eligibility
40 Years to 67 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Conditions
Multiple Myeloma, Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia, Non Hodgkin Lymphoma, Acute Lymphocytic Leukemia, Hodgkin Lymphoma, Hodgkin Disease, Myelofibrosis, Myelodysplastic Syndromes, Myeloproliferative Neoplasm, Sickle Cell Disease, Mantle Cell Lymphoma
Interventions
Pre-biotic foods/drinks
Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Charlottesville, Virginia
Conditions
Environmental Toxins, General Health
Interventions
CellCore Foundational Protocol, CellCore - BioToxin Binder & Drainage Activator
Dietary Supplement
Lead sponsor
OvationLab
Network
Eligibility
25 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Richmond, Virginia
Completed Not applicable Interventional Accepts healthy volunteers

ButyraGen™, Short Chain Fatty Acids and Gut Microbiome

NCT05601635
Conditions
Healthy
Interventions
ButyraGen™
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Recruiting Phase 4 Interventional Accepts healthy volunteers

Got Doxy- 'Flipping the Script' on STI PEP

NCT07215325
Conditions
Sexually Transmitted Infections (STI)
Interventions
Doxycycline monohydrate 200 mg, Observation
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older · Male only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
2
States / cities
Atlanta, Georgia
Completed Early Phase 1 Interventional Results available

Probiotics for Quality of Life in Autism Spectrum Disorders

NCT02903030
Conditions
Autism Spectrum Disorders, Anxiety
Interventions
Maltose (placebo), Visbiome Extra Strength
Drug
Lead sponsor
Ohio State University
Other
Eligibility
3 Years to 12 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Columbus, Ohio
Conditions
Early Cirrhosis
Interventions
KB174, Maltodextrin
Other
Lead sponsor
Kaleido Biosciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
4
States / cities
Hollywood, Florida • Miami, Florida • Winter Park, Florida + 1 more