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Showing 1–24 of 638 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Not applicable Interventional Accepts healthy volunteers

Gut Microbiome Pill

NCT07243756
Conditions
Healthy
Interventions
3D-printed ingestible pill
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Recruiting Not applicable Interventional Accepts healthy volunteers

Does Psychotherapy Change the Gut Microbiome in Women of Child-bearing Age?

NCT07200531
Conditions
Chronic Stress
Interventions
Psychotherapy
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 54 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Omaha, Nebraska
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Native Chicory Inulin on Change and Persistence of Gut Microbiota

NCT06528041
Conditions
Healthy
Interventions
Inulin, Maltodextrin
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
West Lafayette, Indiana
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Gut Microbiome
Interventions
Stool test for microbial analysis
Diagnostic Test
Lead sponsor
North Florida Foundation for Research and Education
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
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
Completed No phase listed Observational Accepts healthy volunteers

The Effects of a Postbiotic Supplement on Biomarkers of Gut Health

NCT07527286
Conditions
Gastrointestinal, Microbiota Balance, Microbiota, Cortisol, Butyrate, Bloating, Gastrointestinal Upset, Immuno-modulation
Interventions
Postbiotic
Dietary Supplement
Lead sponsor
Verb Biotics LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Canfield, Ohio
Conditions
Vitamin A Deficiency
Interventions
Not listed
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
12 Months to 24 Months
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Davis, California
Conditions
Crohn Disease
Interventions
Fecal Microbiota Transplantation, Placebo
Biological · Other
Lead sponsor
Stanford University
Other
Eligibility
2 Years to 25 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Palo Alto, California
Completed No phase listed Observational Accepts healthy volunteers

Fecal Metabolome and the Intestinal Microbiota in Irritable Bowel Syndrome

NCT02981888
Conditions
IBS
Interventions
X-Ray
Radiation
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Recruiting Not applicable Interventional Accepts healthy volunteers

Evaluating Response to Vitamin D3 and K2 Supplementation in Healthcare Personnel

NCT07199829
Conditions
Hypovitaminosis D, Hypovitaminosis
Interventions
Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3, Placebo
Dietary Supplement · Other
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years to 69 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Tacoma, Washington
Conditions
Metabolic Syndrome X, Inflammation
Interventions
High Dietary Flavonoids, Low Dietary Flavonoids
Other
Lead sponsor
Utah State University
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Logan, Utah
Conditions
Ulcerative Colitis
Interventions
Fecal Microbial Transplant
Biological
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
7 Years to 21 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Active, not recruiting Early Phase 1 Interventional

Fecal Microbiota Transplant for Autobrewery Syndrome

NCT06083142
Conditions
Auto-Brewery Syndrome, Gut Fermentation Syndrome
Interventions
Fecal microbiota transplantation capsules
Biological
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Aspirin on Gut Microbiome

NCT02761486
Conditions
Healthy
Interventions
Aspirin, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
50 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Minneapolis, Minnesota
Conditions
Liver Disease; Alcohol-Related, Cirrhosis, Alcohol Use Disorder
Interventions
Intestinal Microbiota Transplant (IMT) Capsules, Placebo Capsules
Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
2
States / cities
Richmond, Virginia
Conditions
Immune-related Colitis, Colitis
Interventions
RMT, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
9
States / cities
Brainerd, Minnesota • Deer River, Minnesota • Detroit Lakes, Minnesota + 6 more
Conditions
Obesity, Body Weight
Interventions
DGA Mediterranean diet pattern, energy balance, DGA Mediterranean diet pattern, negative energy balance, TAD diet pattern, negative energy balance
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
19 Years to 64 Years · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Davis, California
Completed Not applicable Interventional Accepts healthy volunteers Results available

Use of a Novel Synbiotic to Change Human Gut Bacteria and Improve Health in Obese Adults

NCT02355210
Conditions
Intestinal Microbiota and Barrier Function
Interventions
Bifidobacteria adolescentis BD1, Bifidobacteria animalis subsp. lactis BB-12, Bifidobacteria adolescentis BD1 and galactooligosaccharide, Bifidobacteria animalis subsp. lactis BB-12 and galactooligosaccharide, galactooligosaccharide, Placebo
Dietary Supplement
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Colon Cancer, Colitis
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years to 100 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Antonio, Texas
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
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
Conditions
Cystic Fibrosis, Dysbiosis
Interventions
Vitamin D3, Placebo vitamin D3, Inulin, Placebo Inulin
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Atlanta, Georgia
Conditions
MASLD, Fatty Liver
Interventions
Peanut consumption
Other
Lead sponsor
Henry Ford Health System
Other
Eligibility
30 Years to 70 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Detroit, Michigan
Terminated Not applicable Interventional Accepts healthy volunteers

Microbiome and Axial Spondyloarthritis

NCT04713995
Conditions
Axial Spondyloarthritis
Interventions
Dietary recommendations
Other
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Bothell, Washington