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ClinicalTrials.gov public records Last synced May 21, 2026, 6:16 PM EDT

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

Showing 1–24 of 243 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: IBS Clear all
Terminated No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
perception of rectal balloon distention
Behavioral
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2015
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 28, 2017 · Synced May 21, 2026, 6:16 PM EDT
Enrolling by invitation No phase listed Observational
View directory record Official record
Conditions
Inflammatory Bowel Disease (IBD), Irritable Bowel Syndrome (IBS), Celiac Disease, Diarrhea, Constipation, Microbiome, Crohn's Disease, UC - Ulcerative Colitis, Microscopic Colitis, Functional Dyspepsia
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
4,001 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 24, 2025 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Heali mobile application + Registered Dietitian, Heali mobile application, Standard Dietary Education
Other
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 65 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 7, 2020 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome, IBS
Interventions
endoscopy for tissue biopsy, Blood Sample, Stool Sample
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced May 21, 2026, 6:16 PM EDT
Not yet recruiting Early Phase 1 Interventional
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Psilocybin 25 mg, Psychotherapy Treatment Session, Niacin 100 mg
Drug · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Pain
Interventions
Probiotics - Lactobacillus and bifidobacterium, Placebo
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 8, 2013 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Very low carbohydrate diet
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 15, 2017 · Synced May 21, 2026, 6:16 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation
Interventions
Linaclotide, Matching Placebo
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
759 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
71
States / cities
Huntsville, Alabama • Phoenix, Arizona • Tucson, Arizona + 61 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2020 · Synced May 21, 2026, 6:16 PM EDT
Terminated No phase listed Observational
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 14, 2023 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Personalized Dietary Advice
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
FODMAP
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 2, 2020 · Synced May 21, 2026, 6:16 PM EDT
Completed Phase 4 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Eluxadoline
Drug
Lead sponsor
Allergan
Industry
Eligibility
18 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 18, 2021 · Synced May 21, 2026, 6:16 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Probiotic
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Houston, Texas • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 7, 2016 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Constipation
Interventions
ISOThrive Prebiotic Nectar
Dietary Supplement
Lead sponsor
ISOThrive Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
106 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Manassas, Virginia
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional Results available
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 May 21, 2026, 6:16 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
ORP-101, Placebo
Drug
Lead sponsor
OrphoMed, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
321 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
74
States / cities
Birmingham, Alabama • Chandler, Arizona • Phoenix, Arizona + 61 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced May 21, 2026, 6:16 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
250 mg LX1033 tablets, Placebo tablet
Drug
Lead sponsor
Lexicon Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
373 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
81
States / cities
Huntsville, Alabama • Tempe, Arizona • Tucson, Arizona + 75 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2015 · Synced May 21, 2026, 6:16 PM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
Conditions
Abdominal Pain/ Discomfort, Irritable Bowel Syndrome
Interventions
Music intervention
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced May 21, 2026, 6:16 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Not listed
Lead sponsor
Metabolic Solutions Inc.
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 9, 2014 · Synced May 21, 2026, 6:16 PM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
Conditions
Functional Abdominal Pain Disorders, Irritable Bowel Syndrome (IBS), Functional Gastrointestinal Disorders (FGIDs), Gastrointestinal and Digestive Disorder, Abdominal Pain/ Discomfort, Pain, Functional Dyspepsia
Interventions
Guided Imagery Therapy
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 12 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
2
States / cities
Austin, Texas • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced May 21, 2026, 6:16 PM EDT
Active, not recruiting Not applicable Interventional
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Leukocyte Activation Assay (LAA-MRT) / Lifestyle Eating and Performance (LEAP) program
Diagnostic Test
Lead sponsor
Oxford Biomedical Technologies, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Riviera Beach, Florida
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced May 21, 2026, 6:16 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Diarrhea-predominant Irritable Bowel Syndrome
Interventions
Serum-derived bovine immunoglobulin protein isolate (SBI)
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced May 21, 2026, 6:16 PM EDT
Terminated Phase 2 Interventional Results available
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation
Interventions
Linaclotide Dose A, Linaclotide Dose B, Linaclotide Dose C, Linaclotide Approved Adult Dose, Matching Placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
7 Years to 17 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
46
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Anaheim, California + 39 more
Source: ClinicalTrials.gov public record
Updated Dec 27, 2020 · Synced May 21, 2026, 6:16 PM EDT
Completed Phase 2 Interventional Results available
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 6, 2013 · Synced May 21, 2026, 6:16 PM EDT