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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Irritable Bowel Syndrome With Diarrhea Clear all
Recruiting Phase 2 Interventional

Efficacy of Rifaximin With NAC in IBS-D

NCT06727422
View directory record Official record
Conditions
IBS (Irritable Bowel Syndrome), IBS-D (Diarrhea-predominant)
Interventions
rifaximin 66mg + N-acetylcysteine 560mg three times daily, RNIB21 containing rifaximin 132mg + N-acetylcysteine 560mg three times daily, Placebo
Drug
Lead sponsor
Mark Pimentel, MD
Other
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Jul 23, 2026, 7:39 AM 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 Jul 23, 2026, 7:39 AM EDT
Completed Phase 2 Interventional Results available

Effect of a Cannabinoid Agonist on Colonic Sensory Functions in Patients With Irritable Bowel Syndrome

NCT01786109
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Dronabinol, Placebo
Drug
Lead sponsor
Michael Camilleri
Other
Eligibility
18 Years to 75 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 13, 2013 · Synced Jul 23, 2026, 7:39 AM EDT
Recruiting Phase 2 Interventional

Study to Explore the Therapeutic Effect of Eluxadoline in Treating Irritable Bowel Syndrome With Diarrhea in Children

NCT03339128
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Eluxadoline, Placebo
Drug
Lead sponsor
AbbVie
Industry
Eligibility
6 Years to 17 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
26
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Corona, California + 19 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Jul 23, 2026, 7:39 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 29, 2025 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate the Efficacy and Safety of Vibegron Administered Orally for 12 Weeks to Women With Irritable Bowel Syndrome

NCT03806127
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Vibegron, Placebo
Drug
Lead sponsor
Urovant Sciences GmbH
Industry
Eligibility
18 Years to 70 Years · Female only
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
41
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 35 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2021 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 2 Interventional

A Multi-Center Trial to Determine the Safety and Efficacy of LX1033 in Subjects With Diarrhea-Predominant Irritable Bowel Syndrome

NCT01494233
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 Jul 23, 2026, 7:39 AM EDT
Terminated Phase 3 Interventional Results available

52-Week Efficacy and Safety Study of Ibodutant in Women With Irritable Bowel Syndrome With Diarrhea (IBS-D)

NCT02120027
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Ibodutant 10 mg, Placebo
Drug
Lead sponsor
Menarini Group
Industry
Eligibility
18 Years and older · Female only
Enrollment
558 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
73
States / cities
Chandler, Arizona • Glendale, Arizona • Mesa, Arizona + 62 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2017 · Synced Jul 23, 2026, 7:39 AM EDT
Terminated Phase 2 Interventional

Study to Evaluate the Effects of ONO-2952 on Pain Perception Produced by Rectal Distention in Female Subjects With Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

NCT01887002
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS)
Interventions
ONO-2952, Placebo comparator
Drug
Lead sponsor
Ono Pharma USA Inc
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
4
States / cities
Boston, Massachusetts • St Louis, Missouri • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2016 · Synced Jul 23, 2026, 7:39 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 26, 2020 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 3 Interventional Results available

Rifaximin 3 Times/Day (TID) for Non-Constipation Irritable Bowel Syndrome (IBS)

NCT00724126
View directory record Official record
Conditions
Non-Constipation Irritable Bowel Syndrome
Interventions
Rifaximin, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
637 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
88
States / cities
Anniston, Alabama • Birmingham, Alabama • Huntsville, Alabama + 83 more
Source: ClinicalTrials.gov public record
Updated Nov 28, 2019 · Synced Jul 23, 2026, 7:39 AM 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 Jul 16, 2026 · Synced Jul 23, 2026, 7:39 AM 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 14, 2025 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Not applicable Interventional

A Study of Hemp Hull WFI for IBS Diarrhea

NCT06028035
View directory record Official record
Conditions
Irritable Bowel Syndrome-bile Acid Diarrhea
Interventions
BB01
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 4, 2024 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 3 Interventional

Efficacy Study of Rezular (Arverapamil) in the Treatment of Irritable Bowel Syndrome With Diarrhea (IBS-D)

NCT00552565
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Rezular 15mg, Placebo, Rezular
Drug
Lead sponsor
AGI Therapeutics, Inc.
Other
Eligibility
18 Years to 70 Years
Enrollment
711 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 10, 2009 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 2 Interventional Results available

Mesalamine Granules for Irritable Bowel Syndrome (IBS) With Diarrhea

NCT01177410
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea
Interventions
Placebo, Mesalamine Granules 750 mg, Mesalamine Granules 1500 mg
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
20
States / cities
Sherwood, Arkansas • Anaheim, California • Sacramento, California + 17 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2019 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 3 Interventional

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

NCT00067457
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
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
190
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 166 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced Jul 23, 2026, 7:39 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 17, 2025 · Synced Jul 23, 2026, 7:39 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 16, 2021 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Not applicable Interventional

FODMAP Reintroduction in Irritable Bowel Syndrome

NCT03245645
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea, Irritable Bowel Syndrome With Mixed Bowel Habits
Interventions
Dietary Intervention
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 10, 2023 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 4 Interventional

Hydrogen Breath Test an Instrument to Predict Rifaximin-Response in Irritable Bowel Syndrome Predominant Diarrhea

NCT03729271
View directory record Official record
Conditions
Irritable Bowel Syndrome, Irritable Bowel Syndrome With Diarrhea
Interventions
Rifaximin, Glucose and lactulose hydrogen breath testing
Drug · Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 80 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Jul 23, 2026, 7:39 AM EDT
Completed Phase 2 Interventional

Efficacy, Safety and Tolerability of DNK333 (25 and 100 mg Bid) in Women With Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)

NCT00699166
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
DNK333
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older · Female only
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
29
States / cities
Anniston, Alabama • Huntsville, Alabama • Northport, Alabama + 26 more
Source: ClinicalTrials.gov public record
Updated Jun 16, 2008 · Synced Jul 23, 2026, 7:39 AM EDT
Completed No phase listed Observational

Retrospective Study of IBS-D Patients Previously Receiving SBI

NCT02661425
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome
Interventions
EnteraGam
Other
Lead sponsor
Entera Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
16
States / cities
Greenwich, Connecticut • Hamdon, Connecticut • Coral Springs, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2016 · Synced Jul 23, 2026, 7:39 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Effect of Ranolazine on Gastrointestinal Motor Function and Pain in Patients With IBS-D

NCT02239926
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 14, 2016 · Synced Jul 23, 2026, 7:39 AM EDT