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ClinicalTrials.gov public records Last synced Sep 10, 2026, 11:38 PM EDT

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Showing 1–24 of 361 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Irritable Bowel Clear all
Completed No phase listed Observational Accepts healthy volunteers

Abdominal Symptom Phenotype Study in Children

NCT01204515
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS)
Interventions
Not listed
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 12 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2013 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 3 Interventional Results available

An Open-label, Long-term Safety Study of Linaclotide in Patients With Chronic Constipation or Irritable Bowel Syndrome With Constipation

NCT00730171
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation, Chronic Constipation
Interventions
Linaclotide
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,743 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
116
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 106 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2018 · Synced Sep 10, 2026, 11:38 PM EDT
Terminated Phase 3 Interventional

Recurrent Abdominal Pain and Exocrine Pancreatic Insufficiency

NCT04231279
View directory record Official record
Conditions
Abdominal Pain, Irritable Bowel Syndrome
Interventions
synthetic human secretin
Drug
Lead sponsor
Orlando Health, Inc.
Other
Eligibility
6 Months to 18 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Apr 2, 2024 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 1 Interventional

A Lactation Study in Women Who Are Breastfeeding or Pumping and Are Receiving Linaclotide Therapeutically

NCT02220348
View directory record Official record
Conditions
Breast Feeding, Constipation, Irritable Bowel Syndrome
Interventions
linaclotide
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Iowa City, Iowa • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 18, 2020 · Synced Sep 10, 2026, 11:38 PM 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 5, 2021 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate the Efficacy, Safety, and Tolerability of BOS-589 in the Treatment of Patients With Diarrhea-predominant Irritable Bowel Syndrome (IBS-D)

NCT03977155
View directory record Official record
Conditions
Diarrhea-predominant Irritable Bowel Syndrome
Interventions
BOS-589, Placebo
Drug
Lead sponsor
Boston Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
58
States / cities
Anniston, Alabama • Huntsville, Alabama • Chandler, Arizona + 48 more
Source: ClinicalTrials.gov public record
Updated Jun 6, 2021 · Synced Sep 10, 2026, 11:38 PM EDT
Recruiting Not applicable Interventional

Transauricular Neurostimulation for Abdominal Pain Due to DGBI

NCT07798180
View directory record Official record
Conditions
Abdominal Pain (AP), Disorders of Gut-brain Interaction
Interventions
Transcutaneous auricular neurostimulation
Device
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
12 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional

A Randomized Crossover Trial of Bright Light Therapy in Irritable Bowel Syndrome

NCT06676488
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS), Circadian Misalignment
Interventions
Re-Timer glasses, Placebo Device
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 10, 2026, 11:38 PM EDT
Terminated Phase 3 Interventional Results available

A Long-term Active Treatment Study of Mongersen (GED-0301) in Subjects With Crohn's Disease

NCT02641392
View directory record Official record
Conditions
Crohn's Disease
Interventions
GED-0301, Placebo
Drug · Other
Lead sponsor
Celgene
Industry
Eligibility
12 Years and older
Enrollment
310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
23
States / cities
San Diego, California • Atlanta, Georgia • Indianapolis, Indiana + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2019 · Synced Sep 10, 2026, 11:38 PM EDT
Completed No phase listed Observational

LOTRONEX® in Severe Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

NCT01257477
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Prometheus Laboratories
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
67
States / cities
Tuscaloosa, Alabama • Scottsdale, Arizona • Little Rock, Arkansas + 60 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Sep 10, 2026, 11:38 PM EDT
Completed No phase listed Observational

Fecal Calprotectin Collection Protocol

NCT03143517
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Irritable Bowel Syndrome, Ulcerative Colitis, Crohn Disease, Indeterminate Colitis, Chronic Diarrhea, Celiac Disease, Diverticulitis, Abdominal Pain, Distension, Weight Loss, Food Intolerance, Constipation
Interventions
Stool collection
Diagnostic Test
Lead sponsor
DiaSorin Inc.
Industry
Eligibility
4 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
13
States / cities
Dothan, Alabama • Little Rock, Arkansas • Mission Hills, California + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2019 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional

Integrative Approaches to Managing Irritable Bowel Syndrome (IBS)

NCT02436603
View directory record Official record
Conditions
Irritable Bowel Syndrome, IBS
Interventions
Nutrition/Mind-Body Coaching
Behavioral
Lead sponsor
Beth Israel Medical Center
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 13, 2018 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional

Atrantil for Intestinal Bacterial Overgrowth

NCT04755673
View directory record Official record
Conditions
Irritable Bowel Syndrome, Bacterial Overgrowth Syndrome, SIBO
Interventions
Atrantil (Medical Food)
Other
Lead sponsor
Northwestern 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
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 11, 2023 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 3 Interventional Results available

Long Term Safety Study of Plecanatide

NCT02706483
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Plecanatide
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
2,272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
204
States / cities
Athens, Alabama • Birmingham, Alabama • Dothan, Alabama + 200 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

GutMe!: IBS and Collagen Protein Powder an Interventional Study

NCT04245254
View directory record Official record
Conditions
Irritable Bowel Syndrome, Irritable Bowel, Irrit
Interventions
Collagen Protien Powder
Dietary Supplement
Lead sponsor
ProofPilot
Industry
Eligibility
18 Years to 100 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

GI Permeability Change in Response to Aquamin®

NCT04855799
View directory record Official record
Conditions
Ulcerative Colitis, Healthy, Irritable Bowel Syndrome With Diarrhea
Interventions
Aquamin
Drug
Lead sponsor
James Varani
Other
Eligibility
18 Years to 80 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional Results available

Efficacy of Open Label Placebo in Children With FGIDs

NCT02389998
View directory record Official record
Conditions
Functional Abdominal Pain, Functional Dyspepsia, Irritable Bowel Syndrome, Functional Gastrointestinal Disorders
Interventions
Placebo Suspension, Hyoscyamine
Other · Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
8 Years to 21 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 2 Interventional Results available

Comparison of Rimegepant and Placebo for Pain in IBS

NCT06221111
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Rimegepant 75 MG [Nurtec]
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional

Gluten Intolerance in Patients With Diarrhea Predominant Irritable Bowel Syndrome

NCT01094041
View directory record Official record
Conditions
Diarrhea, Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Gluten free diet, Gluten rich diet
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 9, 2013 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Not applicable Interventional

Nutritional Impact of Serum-Derived Bovine Immunoglobulin Protein Isolate in Subjects With IPAA

NCT02828410
View directory record Official record
Conditions
Pouchitis, Irritable Pouch Syndrome
Interventions
SBI
Dietary Supplement
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2018 · Synced Sep 10, 2026, 11:38 PM EDT
Recruiting Phase 2 Interventional

A Study of Brenipatide (LY3537031) in Participants With Irritable Bowel Syndrome-Diarrhea (IBS-D)

NCT07545759
View directory record Official record
Conditions
Irritable Bowel Syndrome, Diarrhea
Interventions
LY3537031, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
15
States / cities
Mesa, Arizona • Anaheim, California • Lancaster, California + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 10, 2026, 11:38 PM EDT
Completed Phase 3 Interventional Results available

Second Plecanatide Study In Irritable Bowel Syndrome With Constipation (IBS-C)

NCT02493452
View directory record Official record
Conditions
Irritable Bowel Syndrome Characterized by Constipation
Interventions
Plecanatide, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
1,135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
191
States / cities
Birmingham, Alabama • Guntersville, Alabama • Huntsville, Alabama + 157 more
Source: ClinicalTrials.gov public record
Updated Jun 13, 2019 · Synced Sep 10, 2026, 11:38 PM EDT
Recruiting No phase listed Observational

Indiana University Gastrointestinal Motility Diagnosis Registry

NCT04506593
View directory record Official record
Conditions
Eosinophilic Esophagitis, Gastroesophageal Reflux Disease (GERD), Gastroparesis, Functional Vomiting, Irritable Bowel Syndrome (IBS), Constipation, Chronic Intestinal Pseudo-obstruction, Fecal Incontinence, Small Intestinal Bacterial Overgrowth
Interventions
no intervention
Other
Lead sponsor
Indiana University
Other
Eligibility
Not listed
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Sep 10, 2026, 11:38 PM EDT
Not yet recruiting Early Phase 1 Interventional

Use of A Complex Gut Bacterial Consortium (MITI 001) for the Treatment of Irritable Bowel Syndrome With Diarrhea

NCT07238790
View directory record Official record
Conditions
IBS (Irritable Bowel Syndrome), Diarrhea
Interventions
MITI-001 administration
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
2
States / cities
Redwood City, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 19, 2025 · Synced Sep 10, 2026, 11:38 PM EDT