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ClinicalTrials.gov public records Last synced Oct 24, 2026, 1:56 AM EDT

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Showing 97–120 of 359 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Irritable Colon Clear all
Enrolling by invitation Phase 3 Interventional

A Study Evaluating Oral Eluxadoline Administered to Pediatric Participants With Irritable Bowel Syndrome With Diarrhea (IBS-D)

NCT04880876
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
25mg Eluxadoline, 100mg Eluxadoline
Drug
Lead sponsor
AbbVie
Industry
Eligibility
6 Years to 17 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2032
U.S. locations
6
States / cities
Corona, California • Miami, Florida • Stockbridge, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Oct 24, 2026, 1:56 AM EDT
Recruiting Phase 2 Interventional

Fecal Microbiota Transplantation for IBS

NCT05776914
View directory record Official record
Conditions
Irritable Bowel Syndrome, Diarrhea
Interventions
Donor Fecal Microbiota Transplantation, Autologous Fecal Microbiota Transplantation
Biological
Lead sponsor
Madhusudan (Madhu) Grover, MBBS
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Not applicable Interventional

GI Alpha-Gal Study

NCT06268717
View directory record Official record
Conditions
Alpha-Gal Syndrome, Irritable Bowel Syndrome, Diarrhea, Abdominal Pain, Vomiting
Interventions
Ground pork containing alpha-gal, Pork meat not containing alpha-gal
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 3 Interventional

Study Of Women With Severe Diarrhea-Predominant Irritable Bowel Syndrome Having Failed Conventional Therapy

NCT00067561
View directory record Official record
Conditions
Irritable Colon, Irritable Bowel Syndrome (IBS)
Interventions
Alosetron
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older · Female only
Enrollment
702 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
177
States / cities
Birmingham, Alabama • Calera, Alabama • Tuscaloosa, Alabama + 149 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2015 · Synced Oct 24, 2026, 1:56 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Epidemiology and Pathophysiology of Post-Infectious Functional GI Disorders

NCT03266068
View directory record Official record
Conditions
Campylobacter Infections, Irritable Bowel Syndrome
Interventions
DNA Analysis of Blood Sample, Flexible sigmoidoscopy with colonic biopsies, Small bowel and colonic gastrointestinal permeability, Stool sample analysis
Genetic · Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 24, 2026, 1:56 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Remote Study of an Electronic Means to Characterize Bowel Movements in Adult Populations

NCT04182048
View directory record Official record
Conditions
Irritable Bowel Syndrome, Healthy
Interventions
Not listed
Lead sponsor
HealthMode Inc.
Industry
Eligibility
18 Years and older
Enrollment
843 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 25, 2022 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 2 Interventional Results available

Trial to Understand Efficacy of Colesevelam in Diarrhea Predominant IBS Patients With Bile Acid Malabsorption

NCT03270085
View directory record Official record
Conditions
Chronic Diarrhea, Irritable Bowel Syndrome With Diarrhea, Bile Acid Malabsorption
Interventions
Colesevelam, Placebo
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 27, 2020 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 2 Interventional Results available

Effect of Cannabinoid Agonist on Gastrointestinal and Colonic Motor Functions in Patients With Irritable Bowel Syndrome (IBS)

NCT01253408
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Dronabinol, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 7, 2013 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Not applicable Interventional Results available

Effects of Open-label vs Double-blind Treatment in IBS

NCT02802241
View directory record Official record
Conditions
Irritable Bowel Syndrome, Placebo Effect, Placebos, Peppermint Oil
Interventions
placebo, peppermint oil
Drug · Dietary Supplement
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 22, 2024 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Microbiome Fructan Metabolism and Symptoms in Childhood IBS

NCT02842281
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS)
Interventions
Fructan, Maltodextrin
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 17 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2021 · Synced Oct 24, 2026, 1:56 AM EDT
Recruiting Early Phase 1 Interventional

Novel Pilot Study to Treat Symptoms of IBS With Diarrhea Using Combination Therapy of a Low-FODMAP Diet and a Neuromodulator

NCT06684470
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome, Diarrhea
Interventions
Mirtazapine, Placebo
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Oct 24, 2026, 1:56 AM EDT
Recruiting Phase 2 Interventional

The Use of Directed Probiotics in ME/CFS: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

NCT06211062
View directory record Official record
Conditions
ME/CFS, IBS - Irritable Bowel Syndrome
Interventions
Floradapt Intensive GI, Placebo
Drug · Other
Lead sponsor
Nova Southeastern University
Other
Eligibility
45 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Oct 24, 2026, 1:56 AM EDT
Terminated Not applicable Interventional

Vitamin D Supplementation in IBS

NCT03148288
View directory record Official record
Conditions
Irritable Bowel Syndrome, Vitamin D Deficiency, Abdominal Pain
Interventions
Vitamin D, placebo
Dietary Supplement
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 6, 2020 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 3 Interventional Results available

Trial of Linaclotide in Patients With Irritable Bowel Syndrome With Constipation (IBS-C)

NCT00938717
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation
Interventions
Linaclotide or Matching Placebo
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
805 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
107
States / cities
Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 97 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2013 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 4 Interventional Results available

An Open-Label Trial of Duloxetine for the Treatment of Irritable Bowel Syndrome

NCT00401258
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
duloxetine
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 9, 2018 · Synced Oct 24, 2026, 1:56 AM EDT
Terminated No phase listed Observational

Systems Biology of Gastrointestinal and Related Diseases

NCT05579444
View directory record Official record
Conditions
Ulcerative Colitis, Crohn Disease, Obesity, Colon Polyp, Eosinophilic Esophagitis, GERD, Gastro Esophageal Reflux, Barrett Esophagus, Esophageal Cancer, Gastritis, Gastric Ulcer, Duodenal Ulcer, Intestinal Metaplasia, Gastric Cancer, Lymphocytic Colitis, Microscopic Colitis, Celiac Sprue, IBS, Irritable Bowel Syndrome, SIBO, NAFLD, Gallstone Disease
Interventions
Not listed
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Dec 15, 2023 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 2 Interventional

Study to Assess the Efficacy and Safety of Rifaximin Administered BID in the Treatment of Patients With Diarrhea-Associated Irritable Bowel Syndrome

NCT00269412
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Rifaximin
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
525 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
67
States / cities
Scottsdale, Arizona • Tempe, Arizona • Anaheim, California + 61 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 2 Interventional Results available

Efficacy of Mesalamine in Diarrhea-predominant Irritable Bowel Syndrome (dIBS)

NCT01327300
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Mesalamine, Placebo
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 12, 2014 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Phase 2 Interventional Results available

Study of LX1031 in Subjects With Non-Constipating Irritable Bowel Syndrome

NCT00813098
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
LX1031 High Dose, LX1031 Low Dose, Placebo
Drug
Lead sponsor
Lexicon Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
36
States / cities
Tucson, Arizona • Sherwood, Arkansas • Anaheim, California + 29 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2010 · Synced Oct 24, 2026, 1:56 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

MAPP Investigation of Pelvic Floor-Brain Neurobiologic Axis in IC/IBS and IBS

NCT01280864
View directory record Official record
Conditions
Interstitial Cystitis, Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 23, 2018 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Not applicable Interventional Results available

Effects of Lubiprostone on Gastrointestinal Transit & pH in Irritable Bowel Syndrome (IBS) With Constipation

NCT01162863
View directory record Official record
Conditions
Irritable Bowel Syndrome, Constipation
Interventions
Lubiprostone, Placebo, Smartpill wireless motility capsule
Drug · Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 27, 2017 · Synced Oct 24, 2026, 1:56 AM EDT
Recruiting Not applicable Interventional

Well-being in IBS: Strengths and Happiness (WISH) 2.0

NCT06866106
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Positive Psychology (PP) Intervention, Educational Intervention
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 24, 2026, 1:56 AM EDT
Completed Not applicable Interventional

Yogic Breathing and IBS

NCT04225104
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Yogic breathing intervention
Behavioral
Lead sponsor
Texas State University
Other
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
San Marcos, Texas
Source: ClinicalTrials.gov public record
Updated Aug 6, 2021 · Synced Oct 24, 2026, 1:56 AM EDT
Terminated Not applicable Interventional

Study of Performance of Confocal Endomicroscope With Fluorescein Imaging Agent in the Colon

NCT03220711
View directory record Official record
Conditions
Colonic Dysplasia, Adenomatous Polyps, Irritable Bowel Disease
Interventions
confocal endomicroscope, Fluorescein
Device · Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 100 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 22, 2022 · Synced Oct 24, 2026, 1:56 AM EDT