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ClinicalTrials.gov public records Last synced Oct 30, 2026, 12:01 AM EDT

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Showing 1–24 of 364 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Irritable Bowel Clear all
Terminated Phase 2 Interventional

Use of Novel Prebiotic Fiber for Targeted Dietary Management of Irritable Bowel Syndrome (Nutrabiotix Phase II)

NCT02144753
View directory record Official record
Conditions
Constipation-predominant IBS (IBS-C)
Interventions
NTX-1, psyllium (15 g)
Dietary Supplement · Drug
Lead sponsor
Nutrabiotix, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 2, 2016 · Synced Oct 30, 2026, 12:01 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 30, 2026, 12:01 AM EDT
Completed Phase 2 Interventional Results available

SP-304 Dose Ranging Study in Patients With Chronic Idiopathic Constipation

NCT01053962
View directory record Official record
Conditions
Chronic Idiopathic Constipation
Interventions
SP-304 0.3 mg, SP-304 1.0 mg, SP-304 3.0 mg, SP-304 9.0 mg, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
14
States / cities
Mesa, Arizona • Tucson, Arizona • Anaheim, California + 11 more
Source: ClinicalTrials.gov public record
Updated Jan 2, 2020 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Not applicable Interventional

Nursing Management of Irritable Bowel Syndrome (IBS) 2008

NCT00907790
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Usual Care (Control Group), Comprehensive Self-Management (CSM)
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 70 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 4, 2017 · Synced Oct 30, 2026, 12:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

ALPCO/Calprotectin CLIA Assay: Expected Values of Calprotectin in Healthy Subjects

NCT07089420
View directory record Official record
Conditions
IBD (Inflammatory Bowel Disease), IBS - Irritable Bowel Syndrome, Crohn Disease (CD), UC - Ulcerative Colitis
Interventions
ALPCO Calprotectin CLIA
Device
Lead sponsor
American Laboratory Products Company
Industry
Eligibility
22 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Salem, New Hampshire
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Not applicable Interventional

Brief Behavioral Treatment for Sleep Problems in IBS Study

NCT03087799
View directory record Official record
Conditions
Irritable Bowel Syndrome, Sleep Disturbance
Interventions
Brief Behavioral Treatment for Sleep
Behavioral
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
20 Years to 50 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 4, 2020 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Phase 2 Interventional Results available

Aldafermin (NGM282) for Chronic Diarrhea Due to Bile Acid Malabsorption (BAM)

NCT05130047
View directory record Official record
Conditions
Chronic Diarrhea, Irritable Bowel Syndrome With Diarrhea, Bile Acid Malabsorption, Bile Acid Diarrhea, Bile Acid Malabsorption Syndrome Type II, Functional Diarrhea
Interventions
Aldafermin, Placebo
Drug
Lead sponsor
Michael Camilleri, MD
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 12, 2023 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gut Permeability, Sensitivity and Symptomatology

NCT02358564
View directory record Official record
Conditions
Irritable Bowel Syndrome, Visceral Hypersensitivity
Interventions
Gastrointestinal Permeability Test, Upper Endoscopy, Rectal Barostat and Infusion of Fats
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
2
States / cities
Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 5, 2021 · Synced Oct 30, 2026, 12:01 AM EDT
Terminated Phase 2 Interventional Results available

Olorinab in Irritable Bowel Syndrome With Predominant Constipation (IBS-C) and Irritable Bowel Syndrome With Predominant Diarrhea (IBS-D)

NCT04043455
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Olorinab, Placebo
Drug
Lead sponsor
Arena Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
69
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2025 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Phase 2 Interventional Results available

A Trial for New Treatment of Adult Participants With Irritable Bowel Syndrome

NCT03721107
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Blautix, Placebo
Biological · Other
Lead sponsor
4D pharma plc
Industry
Eligibility
18 Years to 70 Years
Enrollment
366 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
24
States / cities
Huntsville, Alabama • Phoenix, Arizona • North Hollywood, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2022 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Phase 4 Interventional Results available

Efficacy of Eluxadoline in the Treatment of Irritable Bowel Syndrome With Diarrhea in Patients With Inadequate Control of Symptoms With Prior Loperamide Use

NCT02959983
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Eluxadoline, Placebo
Drug
Lead sponsor
Allergan
Industry
Eligibility
18 Years to 80 Years
Enrollment
346 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
76
States / cities
Huntsville, Alabama • Saraland, Alabama • Phoenix, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Feb 15, 2019 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Not applicable Interventional Results available

Irritable Bowel Syndrome Hypnotherapy

NCT01248013
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
gut focused hypnotherapy
Behavioral
Lead sponsor
Mind-Body Digestive Center
Other
Eligibility
20 Years and older
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 6, 2011 · Synced Oct 30, 2026, 12:01 AM EDT
Recruiting Not applicable Interventional

Mechanisms of Gulf War Illness

NCT05972291
View directory record Official record
Conditions
Gulf War Illness, Irritable Bowel Syndrome, Gastrointestinal Symptoms
Interventions
Oral Glutamine, Control Arm
Dietary Supplement · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 30, 2026, 12:01 AM 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 11, 2021 · Synced Oct 30, 2026, 12:01 AM EDT
Terminated Phase 2 Interventional Results available

A Safety and Efficacy Study of a Range of Linaclotide Doses Administered Orally to Children Ages 7-17 Years, With Irritable Bowel Syndrome With Constipation

NCT02559817
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 28, 2020 · Synced Oct 30, 2026, 12:01 AM 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 Sep 1, 2026 · Synced Oct 30, 2026, 12:01 AM EDT
Terminated Phase 1 Interventional

Effect of Olorinab on Gastrointestinal Transit in Patients With Irritable Bowel Syndrome

NCT04655599
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Olorinab, Placebo
Drug
Lead sponsor
Arena Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Oct 30, 2026, 12:01 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Objective Integrated Multimodal Electrophysiological Index for the Quantification of Visceral Pain

NCT06381921
View directory record Official record
Conditions
Abdominal Pain
Interventions
IBS-PPSM intervention
Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 50 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 30, 2026, 12:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

ALPCO Calprotectin ELISA - Measurement of Calprotectin Levels in Human Stool

NCT03082287
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Irritable Bowel Syndrome
Interventions
Fecal Calprotectin Level
Device
Lead sponsor
American Laboratory Products Company
Industry
Eligibility
22 Years and older
Enrollment
424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Salem, New Hampshire
Source: ClinicalTrials.gov public record
Updated Nov 5, 2019 · Synced Oct 30, 2026, 12:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Gastrointestinal Myoelectric Activity Protocol, the G-Tech EEnG Protocol

NCT01697397
View directory record Official record
Conditions
Gastrointestinal Diseases
Interventions
Recording of Myoelectric Signals
Device
Lead sponsor
G-Tech Corporation
Industry
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Oct 30, 2026, 12:01 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 30, 2026, 12:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of Gulf War Illness (GWI) by Comparing GWI and Healthy Veterans

NCT00810225
View directory record Official record
Conditions
Gulf War Illness, Persian Gulf War Syndrome
Interventions
Not listed
Lead sponsor
Georgetown University
Other
Eligibility
Not listed
Enrollment
516 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Phase 2 Interventional Results available

Randomized, Double-blind, Dose-range-finding, Phase 2 Study of Linaclotide Administered to Patients With Irritable Bowel Syndrome With Constipation (IBS-C)

NCT00460811
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation
Interventions
Linaclotide Acetate, Matching placebo
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
79
States / cities
Huntsville, Alabama • Chandler, Arizona • Tuscon, Arizona + 76 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2013 · Synced Oct 30, 2026, 12:01 AM EDT
Completed Phase 1 Interventional

Safety Study of Probiotics in Adults With Irritable Bowel Syndrome

NCT00971711
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 8, 2016 · Synced Oct 30, 2026, 12:01 AM EDT