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ClinicalTrials.gov public records Last synced Oct 23, 2026, 9:15 PM EDT

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Showing 73–96 of 359 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Irritable Colon Clear all
Completed Not applicable Interventional Results available

Neomycin and Rifaximin Plus Neomycin in Treating Methane Positive Constipation Predominant Irritable Bowel Syndrome

NCT00945334
View directory record Official record
Conditions
Constipation-predominant Irritable Bowel Syndrome
Interventions
Neomycin, Placebo, Rifaximin
Drug
Lead sponsor
Mark Pimentel, MD
Other
Eligibility
18 Years to 75 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Los Angeles, California • Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 10, 2015 · Synced Oct 23, 2026, 9:15 PM EDT
Terminated Not applicable Interventional

Effect of Acupuncture on Symptoms of Diarrhea and Pain in IBS

NCT00219505
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
acupuncture
Procedure
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 90 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 24, 2017 · Synced Oct 23, 2026, 9:15 PM EDT
Not listed Not applicable Interventional

A Clinical Trial Evaluating Diets for IBS

NCT05831306
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Diet A, Diet B
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
2
States / cities
Boston, Massachusetts • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 28, 2023 · Synced Oct 23, 2026, 9:15 PM EDT
Not listed No phase listed Observational

Genetics of Fibromyalgia

NCT00071162
View directory record Official record
Conditions
Fibromyalgia, Irritable Bowel Syndrome, Chronic Fatigue Syndrome, Depression
Interventions
Not listed
Lead sponsor
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
NIH
Eligibility
12 Years and older
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
4
States / cities
Peoria, Illinois • Cincinnati, Ohio • Cleveland, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2009 · Synced Oct 23, 2026, 9:15 PM EDT
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers

Trenev Trio/Healthy Trinity for Symptoms of Diarrhea-predominant Irritable Bowel Syndrome (IBS) and Functional Dyspepsia

NCT01268618
View directory record Official record
Conditions
IBS-D and Functional Dyspepsia
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
Sprim Advanced Life Sciences
Other
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
2
States / cities
Duluth, Georgia • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 21, 2011 · Synced Oct 23, 2026, 9:15 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Irritable Bowel Syndrome and Control Volunteers: Diet Challenge

NCT03983434
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Inulin
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 30, 2025 · Synced Oct 23, 2026, 9:15 PM EDT
Completed Not applicable Interventional Results available

Efficacy and Safety of IBS Digital Behavioral Treatment

NCT04133519
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Arm 1 - Active behavioral Treatment Arm (Regulora; Gut-Directed Hypnotherapy Software as a Medical Device - SaMD), Arm 2 - Active Comparator behavioral treatment arm (MR-1; Muscle Relaxation, Software as a Medical Device - SaMD)
Device
Lead sponsor
metaMe Health
Industry
Eligibility
18 Years to 70 Years
Enrollment
378 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Oct 23, 2026, 9:15 PM EDT
Completed Phase 3 Interventional

Study to Assess Safety and Efficacy of Tenapanor for Treatment of IBS-C in Pediatric Patients 12 to Less Than 18 Years

NCT05643534
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation (IBS-C)
Interventions
Tenapanor 50 MG, Tenapanor 25 mg bid, Placebo
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
12 Years to 17 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
39
States / cities
Foley, Alabama • Tucson, Arizona • Little Rock, Arkansas + 34 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 23, 2026, 9:15 PM 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 23, 2026, 9:15 PM EDT
Terminated Not applicable Interventional Results available

A Study of Randomized Sham-control Auricular TENS Unit Stimulation in Pediatric Functional Gastrointestinal Disorders

NCT04247100
View directory record Official record
Conditions
Functional Gastrointestinal Disorders, Vagus Nerve Autonomic Disorder, Irritable Bowel Syndrome, Nausea, Dyspepsia
Interventions
Transcutaneous Electrical Nerve Stimulation (TENS), Sham Transcutaneous Electrical Nerve Stimulation
Device
Lead sponsor
Gisela Grotewold Chelimsky
Other
Eligibility
12 Years to 18 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 12, 2023 · Synced Oct 23, 2026, 9:15 PM 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 23, 2026, 9:15 PM EDT
Completed Not applicable Interventional

Relaxation Music for Chronic Pain

NCT06993272
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome, IBD - Inflammatory Bowel Disease
Interventions
MIndful Jazz, Reggae Stereotypes, Traditional Mindfulness, Pain psychoeducation
Behavioral
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 23, 2026, 9:15 PM 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 23, 2026, 9:15 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Assessing Symptom and Mood Dynamics in Pain Using the Smartphone Application SOMA

NCT05754190
View directory record Official record
Conditions
Chronic Pain, Acute Pain, Post Operative Pain, Fibromyalgia, Primary, Fibromyalgia, Secondary, Fibromyalgia, Irritable Bowel Syndrome, Chronic Headache Disorder, Chronic Migraine, Chronic Pelvic Pain Syndrome, Temporomandibular Joint Disorders, Endometriosis-related Pain, Arthritis, Chronic Low-back Pain, Failed Back Surgery Syndrome, Post Herpetic Neuralgia, Neuropathic Pain, Painful Diabetic Neuropathy, Painful Bladder Syndrome, Trauma-related Wound, Trauma, Multiple, Chronic Pain Syndrome, Chronic Shoulder Pain
Interventions
SOMA pain manager smartphone application
Device
Lead sponsor
Brown University
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 19, 2025 · Synced Oct 23, 2026, 9:15 PM EDT
Recruiting Not applicable Interventional

Home-based Transcutaneous Auricular Vagus Nerve Stimulation (taVNS) for IBS Pain

NCT06847360
View directory record Official record
Conditions
Pain, Chronic, Irritable Bowel Syndrome, Symptom Cluster
Interventions
Home-based taVNS intervention
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years to 29 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 23, 2026, 9:15 PM EDT
Terminated Not applicable Interventional Results available

Irritable Bowel Syndrome (IBS) Functional Magnetic Resonance Imaging (fMRI) With Desipramine

NCT00880594
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Desipramine
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 90 Years · Female only
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 23, 2026, 9:15 PM EDT
Withdrawn No phase listed Observational

A Non-Interventional Pilot Study to Explore the Role of Gut Flora in IBS

NCT04214470
View directory record Official record
Conditions
Irritable Bowel, Irritable Bowel Syndrome, Irritable Bowel Syndrome With Diarrhea, Irritable Bowel Syndrome Mixed, Irritable Bowel Syndrome With Constipation, Irritable Bowel Syndrome Without Diarrhea, Irritable Bowel Syndrome Aggravated, Irritable Bowel Syndrome Characterized by Constipation, Irritable Bowel Syndrome Characterised by Alternating Bowel Habit
Interventions
No intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 23, 2026, 9:15 PM EDT
Completed Not applicable Interventional

Serum-Derived Bovine Immunoglobulin /Protein Isolate (SBI) 5.0 g Bid on Nutritional Status in Subjects With IBS-D

NCT02163213
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 18, 2017 · Synced Oct 23, 2026, 9:15 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

OptiCal Study -Optimizing Fecal Calprotectin Monitoring: a Clinical Study Comparing CalproLab Against PhiCal and Evaluating Its Association With the Gut Microbiome

NCT03051204
View directory record Official record
Conditions
Crohn Disease, Ulcerative Colitis, Irritable Bowel Syndrome, Celiac Disease, Healthy
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Years to 65 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 22, 2023 · Synced Oct 23, 2026, 9:15 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Efficacy and Safety of Rifaximin With NAC in IBS-D

NCT04557215
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Rifaximin, N-acetylcysteine, Placebo
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 28, 2023 · Synced Oct 23, 2026, 9:15 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study On The Effect Of GW876008 On Cerebral Blood Flow In Irritable Bowel Syndrome (IBS) Patients And Healthy Volunteers

NCT00376896
View directory record Official record
Conditions
Irritable Colon, Irritable Bowel Syndrome (IBS)
Interventions
GW876008 200mcg, GW876008 20mcg, Placebo
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 16, 2017 · Synced Oct 23, 2026, 9:15 PM EDT
Completed Not applicable Interventional

Web-based Management of Pediatric Functional Abdominal Pain

NCT02327377
View directory record Official record
Conditions
Gastrointestinal Disorders, Functional
Interventions
Online Cognitive Behavior Therapy, Online Education
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
11 Years to 17 Years
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 28, 2019 · Synced Oct 23, 2026, 9:15 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Specimen and Data Collection for a Novel Biomarker Combination for the Differential Diagnosis of Inflammatory Bowel Disease and Irritable Bowel Syndrome.

NCT07471490
View directory record Official record
Conditions
IBD (Inflammatory Bowel Disease), IBS (Irritable Bowel Syndrome), Gastrointestinal Symptoms
Interventions
Not listed
Lead sponsor
DiaSorin Inc.
Industry
Eligibility
2 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 23, 2026, 9:15 PM EDT
Terminated Phase 2 Interventional

Study of the Research Medicine CIN-103 in Adults With Irritable Bowel Syndrome With Predominant Diarrhea (IBS-D).

NCT06153420
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
CIN-103, Placebo
Drug
Lead sponsor
CinPhloro Pharma, LLC
Industry
Eligibility
18 Years and older
Enrollment
421 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
53
States / cities
Dothan, Alabama • Huntsville, Alabama • Phoenix, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Oct 23, 2026, 9:15 PM EDT