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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: GI Symptoms Clear all
Not listed No phase listed Observational

Pediatric Acute Gastrointestinal Bleeding Registry

NCT03090945
View directory record Official record
Conditions
Upper Gastrointestinal Bleeding, Gastro Intestinal Bleeding
Interventions
This is an obsevational cohort study
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Up to 21 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
3
States / cities
Chicago, Illinois • Boston, Massachusetts • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 15, 2020 · Synced Sep 20, 2026, 12:06 PM EDT
Active, not recruiting Not applicable Interventional

Real World Treatment Experience of Patients With Breast, Lung, or GI Cancer or Multiple Myeloma Using Remote Symptom Monitoring

NCT05587972
View directory record Official record
Conditions
Breast Cancer, Lung Cancer, Gastrointestinal Cancer, Multiple Myeloma
Interventions
survey
Other
Lead sponsor
Carevive Systems, Inc.
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Phase 2 Interventional

Effectiveness, Safety and Tolerability Study of RP-G28 for Symptoms Associated With Lactose Intolerance

NCT01113619
View directory record Official record
Conditions
Lactose Intolerance
Interventions
RP-G28 or placebo
Drug
Lead sponsor
Ritter Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
2
States / cities
Honolulu, Hawaii • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 7, 2011 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of Bacillus Subtilis R0179 in Healthy Young Adults

NCT01802151
View directory record Official record
Conditions
Healthy
Interventions
B. subtilis R0179, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 50 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Sep 20, 2026, 12:06 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Evaluate the Effects of Super Liver Liquid Drops on Gut Health, Digestive Comfort, and Daily Energy Levels

NCT07742657
View directory record Official record
Conditions
Gastrointestinal Symptoms, Bloating, Digestive Discomfort, Low Energy Levels, Brain Fog, Mood Instability, Sleep Quality, Skin Clarity, Facial Puffiness, Bad Breath
Interventions
Super Liver
Dietary Supplement
Lead sponsor
SuperBonsai Inc.
Industry
Eligibility
30 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 2, 2026 · Synced Sep 20, 2026, 12:06 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Mouthrinse on the Microbiome of the Oral Cavity and GI Tract

NCT05603650
View directory record Official record
Conditions
Oral Bacterial Infection, Oral Infection, Microbial Colonization, Viral Infection
Interventions
Lumineux Oral Essentials rinse, Listerine rinse
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Probiotic Blend Reduces Gastrointestinal Symptoms and Positively Impacts Microbiota Modulation in a Randomized Study

NCT05614726
View directory record Official record
Conditions
Microbiota, Constipation, Candida
Interventions
575mg [30 billion colony forming units] probiotic blend of Bifidobacterium breve, Lactobacillus acidophilus, Lacticaseibacillus rhamnosus, Saccharomyces boulardii, and alpha amylase
Dietary Supplement
Lead sponsor
The Center for Applied Health Sciences, LLC
Industry
Eligibility
30 Years to 60 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 13, 2022 · Synced Sep 20, 2026, 12:06 PM EDT
Not yet recruiting Not applicable Interventional

Mind-Body Sexual Well-Being Program for Female GI Cancer Survivors

NCT07795801
View directory record Official record
Conditions
Colorectal Cancer (Diagnosis), Anal Cancer, Sexual Dysfunction Female
Interventions
Mind-Body Group Intervention, Enhanced Usual Care Control (EUCC)
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 20, 2026, 12:06 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

BSGM to Evaluate Patients With GI Symptoms

NCT05880199
View directory record Official record
Conditions
Gastrointestinal Motility Disorders in Children, Functional Gastrointestinal Disorders, Gastroparesis, Dyspepsia and Other Specified Disorders of Function of Stomach
Interventions
Body surface gastric mapping device
Device
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
8 Years to 25 Years
Enrollment
685 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
5
States / cities
San Diego, California • Kansas City, Missouri • Cincinnati, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 20, 2026, 12:06 PM EDT
Completed No phase listed Observational

Intestinal Microbiome, Oral Microbiome, and Whole Blood Transcriptome Analyses in Gastrointestinal Malignancies

NCT05462314
View directory record Official record
Conditions
Gastrointestinal Cancer, Pancreatic Cancer, Esophageal Cancer, Gastric Cancer, Rectal Cancer, Liver Cancer, Biliary Cancer
Interventions
Not listed
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Phase 3 Interventional

Esomeprazole for Prevention of Upper Gastrointestinal Symptoms Associated With Continuous Use of NSAIDs

NCT00241514
View directory record Official record
Conditions
GERD
Interventions
Esomeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
334 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
19
States / cities
Tucson, Arizona • Anaheim, California • Orange, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2011 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a Supplement to Promote Gut Health

NCT05831527
View directory record Official record
Conditions
Gastrointestinal Symptoms, Exercise Performance
Interventions
ARMRA™ Bovine Colostrum
Drug
Lead sponsor
Armra
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Apr 25, 2023 · Synced Sep 20, 2026, 12:06 PM EDT
Terminated Not applicable Interventional

Early Colonoscopy for Lower Gastrointestinal (GI) Bleeding

NCT01031342
View directory record Official record
Conditions
Gastrointestinal Hemorrhage
Interventions
Early colonoscopy, Elective colonoscopy
Procedure
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 24, 2011 · Synced Sep 20, 2026, 12:06 PM EDT
Not listed Phase 2Phase 3 Interventional Accepts healthy volunteers

Trenev Trio®/Healthy Trinity® for Recurrent Gastrointestinal Symptoms

NCT01444859
View directory record Official record
Conditions
Recurrent Gastrointestinal Symptoms
Interventions
Trenev Trio®/Healthy Trinity®, Placebo
Dietary Supplement
Lead sponsor
Sprim Advanced Life Sciences
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
5
States / cities
Los Angeles, California • San Francisco, California • West Lawn, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2012 · Synced Sep 20, 2026, 12:06 PM EDT
Active, not recruiting No phase listed Observational

Gastric Ultrasound for Estimation of the Aspiration Risk Study

NCT03310528
View directory record Official record
Conditions
Respiratory Aspiration of Gastric Contents
Interventions
Interview questionnaire, Gastric ultrasound exam
Behavioral · Procedure
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 99 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 20, 2026, 12:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Impact of Diet on Functional Gastrointestinal Symptoms

NCT03102411
View directory record Official record
Conditions
Gastrointestinal Disorder, Functional
Interventions
Not listed
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years to 80 Years
Enrollment
1,881 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 24, 2019 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Not applicable Interventional

Validating M.D. Anderson Symptom Inventory (MDASI-GI) in GI Cancer Patients Under Chemotherapy

NCT00849979
View directory record Official record
Conditions
Gastrointestinal Cancer
Interventions
Questionnaire, Interview
Behavioral · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2012 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Phase 3 Interventional

Esomeprazole for Relief of Upper Gastrointestinal Symptoms Associated With Continuous Use of NSAIDs

NCT00241527
View directory record Official record
Conditions
NSAIDs, Upper GI Symptoms
Interventions
Esomeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
556 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2002
U.S. locations
32
States / cities
Tallassee, Alabama • Phoenix, Arizona • Garden Grove, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2011 · Synced Sep 20, 2026, 12:06 PM EDT
Terminated Early Phase 1 Interventional Results available

Ketamine-assisted Psychotherapy (KAP) for Patients With Existential Distress Associated With Non-operable GI Cancers

NCT06001372
View directory record Official record
Conditions
Gastrointestinal Cancer, Depression, Anxiety
Interventions
Ketamine
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Sep 20, 2026, 12:06 PM EDT
Withdrawn Phase 4 Interventional

Genetically-informed Therapies for Patients With Metastatic Cancer

NCT02000739
View directory record Official record
Conditions
Metastatic Cancer
Interventions
Genetically Informed Therapy
Genetic
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 13, 2014 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Staccato Granisetron® (AZ 010) for the Treatment of Cyclic Vomiting Syndrome

NCT04645953
View directory record Official record
Conditions
Cyclic Vomiting Syndrome
Interventions
3mg AZ-010, 1mg AZ010, Staccato Placebo
Combination Product
Lead sponsor
Alexza Pharmaceuticals, Inc.
Other
Eligibility
18 Years to 60 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
18
States / cities
Lancaster, California • Los Angeles, California • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2025 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Kefir Versus Milk on Time-Trial Performance in Masters Athletes

NCT06165523
View directory record Official record
Conditions
Gastrointestinal Complication, Exercise Performance, Aerobic Endurance
Interventions
Water, Flavored Kefir, Flavored Milk
Other
Lead sponsor
Lindenwood University
Other
Eligibility
40 Years to 75 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 10, 2023 · Synced Sep 20, 2026, 12:06 PM EDT
Completed Phase 1Phase 2 Interventional

In-Situ Therapeutic Cancer Vaccine for Metastatic Cancer Combining AlloStim With Tumor Cryoablation

NCT00861107
View directory record Official record
Conditions
Metastatic Cancer
Interventions
AlloStim-7, percutaneous tumor cryoablation, AlloStim8 or AlloStim-9
Biological · Procedure
Lead sponsor
Mirror Biologics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Carlsbad, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2011 · Synced Sep 20, 2026, 12:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Comparison of SmartPill Capsule With Scintigraphy for Determining Gastric Residence Time - Over 65 Years Old

NCT00682877
View directory record Official record
Conditions
Gastrointestinal Diseases, Stomach Diseases, Gastroparesis
Interventions
Not listed
Lead sponsor
The SmartPill Corporation
Industry
Eligibility
65 Years to 80 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
2
States / cities
Kansas City, Kansas • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 22, 2008 · Synced Sep 20, 2026, 12:06 PM EDT