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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Diarrhea Clear all
Completed Phase 3 Interventional

Octreotide Compared With Loperamide Hydrochloride for Chemotherapy-Related Diarrhea in Patients With Colorectal Cancer

NCT00003057
View directory record Official record
Conditions
Colorectal Cancer, Diarrhea
Interventions
loperamide hydrochloride, octreotide acetate
Drug
Lead sponsor
Eastern Cooperative Oncology Group
Network
Eligibility
18 Years to 120 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1997
U.S. locations
33
States / cities
La Jolla, California • San Francisco, California • Wilmington, Delaware + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2023 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Fresh, Frozen or Lyophilized Fecal Microbiota Transplantation for Multiple Recurrent C. Difficile Associated Diarrhea

NCT02318992
View directory record Official record
Conditions
Recurrent C. Difficile Associated Diarrhea
Interventions
Fecal Microbiota
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 22, 2024 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety and Efficacy Study of a Vaccine Against Enterotoxigenic Escherichia Coli (ETEC) to Prevent Moderate to Severe Diarrhea

NCT01060748
View directory record Official record
Conditions
Diarrhea
Interventions
ACE527, Placebo
Biological
Lead sponsor
TD Vaccines A/S
Industry
Eligibility
18 Years to 50 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 6, 2011 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Bacillus Subtilis DE111® on Daily Bowel Movements

NCT04083521
View directory record Official record
Conditions
Bowel Movement Regulation, Occasional Constipation, Occasional Diarrhea
Interventions
Bacillus subtilis DE111®
Dietary Supplement
Lead sponsor
Deerland Enzymes
Industry
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Kennesaw, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 9, 2019 · Synced Jul 21, 2026, 7:00 AM EDT
Active, not recruiting Phase 2 Interventional

Microbiota Transplant Therapy for Children With Both Autism Spectrum Disorder and Gastrointestinal Disorders

NCT06503978
View directory record Official record
Conditions
Autism Spectrum Disorder, Gastro-Intestinal Disorder, Constipation, Diarrhea
Interventions
MTP-101P, Vancomycin, Miralax, Antacid, Placebo MTP-101P, Placebo Vancomycin
Combination Product
Lead sponsor
Gut-Brain-Axis Therapeutics Inc.
Other
Eligibility
4 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 24, 2024 · Synced Jul 21, 2026, 7:00 AM EDT
Not listed Phase 2 Interventional

Safety and Efficacy Study in the Treatment of Intestinal Problems Associated With Autism

NCT00110708
View directory record Official record
Conditions
Autism, Autistic Disorder, Child Development Disorders, Pervasive, Gastrointestinal Diseases, Signs and Symptoms, Digestive
Interventions
Oralgam (human immunoglobulin)
Drug
Lead sponsor
PediaMed Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
22
States / cities
Phoenix, Arizona • Sacramento, California • Gainesville, Florida + 17 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2006 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 2 Interventional

Evaluating an Amino Acid Based Medical Food w/ Diarrhea in Carcinoid Syndrome & Other NETs

NCT03722511
View directory record Official record
Conditions
Neuroendocrine Tumors, Carcinoid Tumor of GI System, Diarrhea, Carcinoid Syndrome
Interventions
Amino Acid Based Medical Food/Drink
Dietary Supplement
Lead sponsor
Lowell Anthony, MD
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Nov 2, 2022 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 3 Interventional

Prophylaxis of Diarrhea in Adult Cancer Patients Receiving Targeted Cancer Therapy

NCT04538625
View directory record Official record
Conditions
Cancer Therapy-Related Diarrhea, Chemotherapy-related Diarrhea, Adult Solid Tumor, Prophylaxis of Diarrhea, Symptomatic Relief of Diarrhea, Targeted Therapy-related Diarrhea
Interventions
Crofelemer 125 MG [Mytesi], Placebo
Drug
Lead sponsor
Napo Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
287 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
27
States / cities
Prescott, Arizona • Anaheim, California • Corona, California + 24 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2024 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Not applicable Interventional

Lactobacillus Reuteri in the Prevention of Antibiotic Associated-diarrhea and Clostridium Difficile

NCT02127814
View directory record Official record
Conditions
Antibiotic-associated Diarrhea, Clostridium Difficile
Interventions
Lactobacillus reuteri
Dietary Supplement
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years and older
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Prevention, Randomized, Double-Blinded, Placebo-Controlled, Parallel Assignment, Safety/Efficacy Study

NCT00672035
View directory record Official record
Conditions
Traveler's Diarrhea
Interventions
Biological: heat-labile enterotoxin of E. coli (LT)
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
406 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
5
States / cities
Davis, California • Bingham Farms, Michigan • Cortland, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2012 · Synced Jul 21, 2026, 7:00 AM EDT
Terminated Phase 2 Interventional

Study of Culturelle in the Prophylaxis of Infection and Diarrhea

NCT01605747
View directory record Official record
Conditions
Pediatric Burns
Interventions
Culturelle, Placebo
Dietary Supplement
Lead sponsor
Shriners Hospitals for Children
Other
Eligibility
6 Months to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 12, 2013 · Synced Jul 21, 2026, 7:00 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Phase 1 meCS6 + LT(R192G) Vaccine Study

NCT00090688
View directory record Official record
Conditions
Diarrhea
Interventions
meCS6 + LT(R192G)
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2004
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 27, 2016 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 2 Interventional

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

NCT00394173
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea (IBS-D)
Interventions
DNK333, Placebo
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
180 participants
Timeline
2006 – 2007
U.S. locations
37
States / cities
Tucson, Arizona • North Little Rock, Arkansas • Los Angeles, California + 34 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2017 · Synced Jul 21, 2026, 7:00 AM EDT
Terminated Phase 4 Interventional Results available

Bezlotoxumab as Secondary Prophylaxis for C. Difficile in High-risk Hospitalized Patients Exposed to Antibiotics.

NCT03937999
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Bezlotoxumab
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
60 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Jul 21, 2026, 7:00 AM 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 4, 2025 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 2 Interventional

A Study of GT160-246 Versus Vancomycin in Patients With Clostridium Difficile-Associated Diarrhea

NCT00034294
View directory record Official record
Conditions
Clostridium Difficile-Associated Diarrhea, Clostridium Enterocolitis, Clostridium Difficile Diarrhea, Antibiotic-associated Colitis, Antibiotic-associated Diarrhea
Interventions
GT160-246
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
58
States / cities
Mobile, Alabama • Phoenix, Arizona • Tucson, Arizona + 50 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Jul 21, 2026, 7:00 AM EDT
Terminated No phase listed Observational

Mechanisms of Idelalisib-Associated Diarrhea in Patients With Relapsed Chronic Lymphocytic Leukemia, Indolent Non-hodgkin Lymphoma, or Small Lymphocytic Lymphoma

NCT02928510
View directory record Official record
Conditions
Absence of Signs or Symptoms, B-Cell Non-Hodgkin Lymphoma, Digestive System Signs and Symptoms, Indolent Adult Non-Hodgkin Lymphoma, Recurrent B-Cell Non-Hodgkin Lymphoma, Recurrent Chronic Lymphocytic Leukemia, Recurrent Indolent Adult Non-Hodgkin Lymphoma, Recurrent Small Lymphocytic Lymphoma
Interventions
Biospecimen Collection, Colonoscopy, Colposcopic Biopsy, Idelalisib, Laboratory Biomarker Analysis, Pharmacological Study, Physical Examination, Sigmoidoscopy
Procedure · Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Jul 21, 2026, 7:00 AM 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 17, 2017 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 2 Interventional

Efficacy, Safety and Tolerability of Cadazolid in Subjects With Clostridium Difficile Associated Diarrhea (CDAD)

NCT01222702
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Cadazolid, Vancomycin, Placebo-matching cadazolid, Placebo-matching vancomycin
Drug
Lead sponsor
Actelion
Industry
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
11
States / cities
Newark, Delaware • Jacksonville, Florida • Orlando, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Jul 21, 2026, 7:00 AM EDT
Recruiting Phase 1 Interventional

A Study of SER-155 to Treat Diarrhea in People on Immunotherapy

NCT06801067
View directory record Official record
Conditions
Diarrhea, Enterocolitis
Interventions
SER-155
Biological
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Jul 21, 2026, 7:00 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 10, 2022 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Not applicable Interventional Results available

Effects of a Very Low Carbohydrate Diet on Symptoms of Irritable Bowel Syndrome (IBS)

NCT00616200
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 Jul 21, 2026, 7:00 AM EDT
Terminated Phase 2 Interventional Results available

Efficacy and Safety of Oral OPS-2071 in Participants With Crohn's Disease Showing Symptoms of Active Inflammation

NCT03850509
View directory record Official record
Conditions
Crohn's Disease
Interventions
OPS-2071, Placebo
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
24
States / cities
Los Angeles, California • San Carlos, California • Colorado Springs, Colorado + 21 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2021 · Synced Jul 21, 2026, 7:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose-Finding Study of CS19 Expressing ETEC Challenge Strains

NCT00564863
View directory record Official record
Conditions
Travelers' Diarrhea
Interventions
CS19 expressing ETEC strain
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Jul 21, 2026, 7:00 AM EDT