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ClinicalTrials.gov public records Last synced Oct 21, 2026, 5:49 PM EDT

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Showing 1–24 of 75 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Abdominal Distention Clear all
Completed No phase listed Observational Accepts healthy volunteers

Abdominal Symptom Phenotype Study in Children

NCT01204515
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS)
Interventions
Not listed
Lead sponsor
Baylor College of Medicine
Other
Eligibility
7 Years to 12 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 6, 2013 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional

Efficacy of Probiotic Bacteria in Subjects With IBS or Functional Diarrhea/ Bloating

NCT00618904
View directory record Official record
Conditions
Pain
Interventions
Probiotics - Lactobacillus and bifidobacterium, Placebo
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 9, 2013 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Single Group Study to Evaluate the Efficacy of Bye Bye Bloat Capsules in Relieving Bloating and Promoting Healthy Digestion.

NCT06516744
View directory record Official record
Conditions
Digestive Health, Digestion
Interventions
Bye Bye Bloat Capsules
Dietary Supplement
Lead sponsor
Love Wellness
Industry
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Oct 21, 2026, 5:49 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Diaphragmatic Breathing for the Treatment of Bloating and Distension

NCT06596759
View directory record Official record
Conditions
Bloating
Interventions
Diaphragmatic Breathing
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Suspended Phase 2 Interventional

A Four Arm Study to Evaluate the Safety and Efficacy of 3 Different Doses of RVX-100 Versus Placebo in Subjects With Irritable Bowel Syndrome Accompanied by Diarrhea (IBS-D)

NCT01076699
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
0.075 mg RVX-100, 0.125 mg RVX-100, 0.250 mg RVX-100, placebo
Drug
Lead sponsor
Revogenex, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Chevy Chase, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 19, 2010 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of a Fiber Supplement on Gut Health

NCT07755735
View directory record Official record
Conditions
Gut Health, Bloating, Irregular Bowel Movements, Gastrointestinal Symptoms
Interventions
Active Supplement, Placebo Comparator
Dietary Supplement
Lead sponsor
Belli Welli Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Results available

Placebo Controlled Trial of Botulinum Toxin for Gastroparesis

NCT00372970
View directory record Official record
Conditions
Gastroparesis
Interventions
Botulinum toxin A, Placebo
Drug
Lead sponsor
Temple University
Other
Eligibility
18 Years to 70 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 9, 2015 · Synced Oct 21, 2026, 5:49 PM EDT
Not listed Phase 3 Interventional

Intranasal PH80 Spray for Acute Management of the Symptoms of Premenstrual Dysphoric Disorder

NCT01217775
View directory record Official record
Conditions
Premenstrual Dysphoric Disorder
Interventions
PH80, Placebo intranasal spray
Drug
Lead sponsor
Pherin Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 43 Years · Female only
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Oct 21, 2026, 5:49 PM EDT
Recruiting No phase listed Observational

Indiana University Gastrointestinal Motility Diagnosis Registry

NCT04506593
View directory record Official record
Conditions
Eosinophilic Esophagitis, Gastroesophageal Reflux Disease (GERD), Gastroparesis, Functional Vomiting, Irritable Bowel Syndrome (IBS), Constipation, Chronic Intestinal Pseudo-obstruction, Fecal Incontinence, Small Intestinal Bacterial Overgrowth
Interventions
no intervention
Other
Lead sponsor
Indiana University
Other
Eligibility
Not listed
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Curcumin (Tumeric) in the Treatment of Irritable Bowel Syndrome: A Randomized-Controlled Trial

NCT00779493
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
curcumin, placebo
Dietary Supplement
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 11, 2015 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Evaluate the Effects of a Supplement on Supporting Signs of a Healthy Metabolism

NCT07765407
View directory record Official record
Conditions
Poor Energy Levels, Poor Metabolism, Difficulty With Weight Management, Bloating
Interventions
Love Wellness Energize
Dietary Supplement
Lead sponsor
Love Wellness
Industry
Eligibility
25 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of a Butyrate Formulation and Butyrate + Polyphenol Formulation on Gut Health, Permeability and Associated Symptoms

NCT06419231
View directory record Official record
Conditions
Gut Health
Interventions
Butyrate Formulation, Butyrate + Polyphenol Formulation, Placebo
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
21 Years to 70 Years
Enrollment
143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Oral Fructanase Administration on Gastrointestinal Symptoms After Inulin Challenge in Healthy Adults

NCT06628869
View directory record Official record
Conditions
Digestive Health, Gastrointestinal Health, FODMAP Intolerance, Food Sensitivity
Interventions
Fructanase, Maltodextrin placebo
Dietary Supplement
Lead sponsor
BIO-CAT, Inc.
Industry
Eligibility
20 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Beef Versus Whey Protein: The Gut Showdown Self-Experiment

NCT07477223
View directory record Official record
Conditions
Digestion
Interventions
Beef protein, Chocolate whey protein
Dietary Supplement
Lead sponsor
Efforia, Inc
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Terminated No phase listed Observational

Escalating Temporary Gastric Electrical Stimulation (GES) for Severe Gastroparesis

NCT02164591
View directory record Official record
Conditions
Gastroparesis
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 90 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 4, 2020 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Efficacy of Linaclotide in Patients With Chronic Constipation and Prominent Abdominal Bloating

NCT01642914
View directory record Official record
Conditions
Chronic Constipation, Constipation
Interventions
Linaclotide 290 micrograms, Linaclotide 145 micrograms, Matching placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Enrollment
487 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
146
States / cities
Chandler, Arizona • Glendale, Arizona • Goodyear, Arizona + 125 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2016 · Synced Oct 21, 2026, 5:49 PM 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 29, 2019 · Synced Oct 21, 2026, 5:49 PM EDT
Completed No phase listed Observational

Helicobacter Pylori Sample Collection Protocol Pre Therapy Subjects

NCT03060746
View directory record Official record
Conditions
Helicobacter Pylori Infection, Gastric Ulcer, Nausea, Abdominal Pain, Weight Loss, Stomach Ulcer, Loss of Appetite, Bloating
Interventions
Newly Diagnosed
Other
Lead sponsor
DiaSorin Inc.
Industry
Eligibility
22 Years and older
Enrollment
277 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
11
States / cities
Mesa, Arizona • Mission Hills, California • Oxnard, California + 8 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2021 · Synced Oct 21, 2026, 5:49 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

An Efficacy Trial in the Research Area of Gastrointestinal Health & Bloating

NCT05418127
View directory record Official record
Conditions
Gastrointestinal Dysfunction
Interventions
Active, Placebo
Dietary Supplement · Other
Lead sponsor
Coconut Goodness Food Products Inc.
Industry
Eligibility
25 Years to 54 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 19, 2023 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate a Probiotic in Healthy Subjects With a History of Abdominal Discomfort and Bloating

NCT01099696
View directory record Official record
Conditions
Abdominal Discomfort, Bloating
Interventions
B. infantis 35624, placebo
Dietary Supplement
Lead sponsor
Procter and Gamble
Industry
Eligibility
18 Years to 75 Years
Enrollment
302 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
10
States / cities
Chicago, Illinois • Rockford, Illinois • Indianapolis, Indiana + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2012 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Phase 2 Interventional

YM443 in Subjects With Functional Dyspepsia

NCT00102310
View directory record Official record
Conditions
Indigestion, Nausea
Interventions
YM443
Drug
Lead sponsor
Astellas Pharma Inc
Industry
Eligibility
18 Years to 75 Years
Enrollment
416 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
59
States / cities
Huntsville, Alabama • Little Rock, Arkansas • Anaheim, California + 52 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2018 · Synced Oct 21, 2026, 5:49 PM EDT
Active, not recruiting Not applicable Interventional

A Clinical Trial to Evaluate the Effects of a Fibre Supplement on Microbiome and Gut Health

NCT07781488
View directory record Official record
Conditions
Gut Health, Microbiome, Bloating, Indigestion, Constipation, Diarrhea, Food Cravings, Abdominal Discomfort, Bowel Movement Irregularity
Interventions
Essential Fibre+
Dietary Supplement
Lead sponsor
Artah Nutrition Limited
Industry
Eligibility
21 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 21, 2026, 5:49 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Capsule Microbiota Sampling in IBS/Functional Gastrointestinal Disease

NCT06215222
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome, Healthy, Functional Bloating, Functional Gastrointestinal Disorders
Interventions
Microbiota Sampling
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Jan 22, 2024 · Synced Oct 21, 2026, 5:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate the Effects of a Butyrate-Polyphenol Formulation on Gut Health and Associated Symptoms

NCT07371975
View directory record Official record
Conditions
Gut Health
Interventions
Butyrate + Polyphenol Formulation, Placebo
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
25 Years to 70 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 21, 2026, 5:49 PM EDT