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ClinicalTrials.gov public records Last synced Oct 22, 2026, 5:10 AM EDT

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Showing 1–24 of 71 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Gastrointestinal Intolerance Clear all
Completed No phase listed Observational

Prediction of Feeding Problems in Prostaglandin-dependent Prematurely Born Infants With Congenital Heart Disease

NCT01126372
View directory record Official record
Conditions
Congenital Heart Disease, Prematurity, Necrotizing Enterocolitis
Interventions
Not listed
Lead sponsor
University of Utah
Other
Eligibility
Up to 1 Month
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 13, 2013 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Raw Versus Other Milk Sources on Lactose Digestion

NCT01129791
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Raw Milk, Pasteurized Milk, Non-dairy milk
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Oct 22, 2026, 5:10 AM EDT
Recruiting Not applicable Interventional

Effect of Blenderized Enteral Tube Feeds on Pediatric Upper Gastrointestinal Tract Physiology

NCT04900597
View directory record Official record
Conditions
Enteral Feeding Intolerance
Interventions
Elecare Jr, Nourish, Real Foods Blends
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
1 Year and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Comparing the Inflammation, Maldigestion and Symptoms Due to Commercial Milk and A2 Milk

NCT05660278
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Milk containing A1 and A2 beta-casein, Milk containing only A2 beta-casein
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 21, 2022 · Synced Oct 22, 2026, 5:10 AM EDT
Active, not recruiting No phase listed Observational

Evaluating the Prevalence of Acute Hepatic Porphyria in Postural Tachycardia Syndrome

NCT05344599
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Acute Hepatic Porphyria
Interventions
Autonomic Function Testing, Genetic Testing, Urine Testing, Blood laboratory Testing
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Timeline
2022 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Association Between Lactase Deficiency, and the Small Intestinal Microbiome in Adults.

NCT03860051
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 75 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 6, 2024 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Not applicable Interventional

Milk Beta Caseins on Digestive Discomfort, Gastric Emptying

NCT07884123
View directory record Official record
Conditions
Lactose Intolerants, Lactose Malabsorption, Caseins
Interventions
A1/A2 milk with oral naloxone, A1PF milk with oral naloxone
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Enrolling by invitation Phase 4 Interventional

Evaluating RELiZORB Use for the Treatment of Feeding Intolerance in Adults With Moderate to Severe Acute Pancreatitis

NCT07583342
View directory record Official record
Conditions
Acute Pancreatitis (AP), Enhancing Enteral Nutrition Tolerance
Interventions
RELiZORB digestive enzyme (immobilized lipase) cartridge
Device
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
5
States / cities
Bay Shore, New York • Manhasset, New York • Manhattan, New York + 2 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Bifido Bacteria to Improve Lactose Digestion and Tolerance

NCT05668468
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Bifidobacterium adolescentis IVS-1 capsule, Placebo cellulose capsule
Dietary Supplement · Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Phase 3 Interventional

Evaluation of the Efficacy, Durability, Safety, and Tolerability of RP-G28 in Patients With Lactose Intolerance

NCT03597516
View directory record Official record
Conditions
Lactose Intolerance
Interventions
RP-G28, Placebos
Drug
Lead sponsor
Ritter Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
557 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
35
States / cities
Birmingham, Alabama • Chula Vista, California • Huntington Park, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2019 · Synced Oct 22, 2026, 5:10 AM EDT
Completed No phase listed Observational

Glucose Monitoring to Predict and Treat High Glucose Levels After Steroid Treatment

NCT04210128
View directory record Official record
Conditions
Breast Cancer, Pancreatic Cancer, Diabetes, Pre Diabetes
Interventions
Not listed
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 1, 2023 · Synced Oct 22, 2026, 5:10 AM EDT
Active, not recruiting Phase 3 Interventional

Crohn's Disease: Efficacy, Safety, and Pharmacokinetics of Upadacitinib in Pediatric Subjects With Moderately to Severely Active Crohn's Disease

NCT06332534
View directory record Official record
Conditions
Crohn's Disease
Interventions
Upadacitinib
Drug
Lead sponsor
AbbVie
Industry
Eligibility
2 Years to 17 Years
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
12
States / cities
Oakland, California • Palo Alto, California • Aurora, Colorado + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 22, 2026, 5:10 AM 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 22, 2026, 5:10 AM EDT
Completed Phase 3 Interventional Results available

Certolizumab in Crohn's Disease Patients With Loss of Response or Intolerance to Infliximab

NCT00308581
View directory record Official record
Conditions
Crohn's Disease
Interventions
Certolizumab pegol, Placebo
Biological · Other
Lead sponsor
UCB Pharma
Industry
Eligibility
18 Years and older
Enrollment
539 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
31
States / cities
San Francisco, California • Gainesville, Florida • Atlanta, Georgia + 28 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2018 · Synced Oct 22, 2026, 5:10 AM EDT
Active, not recruiting Phase 3 Interventional Results available

Study of Elafibranor in Patients With Primary Biliary Cholangitis (PBC)

NCT04526665
View directory record Official record
Conditions
Primary Biliary Cirrhosis
Interventions
Elafibranor 80mg, Placebo
Drug
Lead sponsor
Ipsen
Industry
Eligibility
18 Years to 75 Years
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
46
States / cities
Chandler, Arizona • Los Angeles, California • Sacramento, California + 34 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Recruiting Not applicable Interventional

Auricular Vagal Nerve Stimulation for Hypermobile Ehlers-Danlos Syndrome

NCT05212129
View directory record Official record
Conditions
Functional Gastrointestinal Disorders, Hypermobile Ehlers-Danlos Syndrome, Postural Orthostatic Tachycardia Syndrome, Autonomic Nervous System Disease, Autonomic Nervous System Imbalance
Interventions
Percutaneous vagal nerve stimulation (pVNS) device, Acoustic vagal nerve stimulation (aVNS) treatment
Device · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
10 Years to 18 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 13, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Terminated Phase 3 Interventional Results available

A Study of Abatacept in Patients With Active Crohn's Disease

NCT00406653
View directory record Official record
Conditions
Crohn's Disease
Interventions
abatacept, placebo
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
451 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
37
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 33 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2010 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Not applicable Interventional

Irritable Bowel Syndrome and Food Sensitivity

NCT02186743
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Personalized Dietary Advice
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 18, 2017 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparing the Adaptation of Commercial Milk and A2 Milk in Lactose Maldigesters

NCT05669274
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Milk containing A1 and A2 beta-casein, Milk containing only A2 beta-casein
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Phase 3 Interventional

A Study of Elafibranor in Adults With Primary Biliary Cholangitis and Inadequate Response or Intolerance to Ursodeoxycholic Acid.

NCT06383403
View directory record Official record
Conditions
Primary Biliary Cholangitis
Interventions
Elafibranor, Placebo
Drug · Other
Lead sponsor
Ipsen
Industry
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
20
States / cities
Coronado, California • Los Angeles, California • Sacramento, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Oct 22, 2026, 5:10 AM EDT
Completed Phase 4 Interventional Results available

Enteric-coated Mycophenolate Sodium (EC-MPS) and Mycophenolate Mofetil (MMF) in Renal Transplant Patients With Gastrointestinal (GI) Intolerance

NCT00400400
View directory record Official record
Conditions
Renal Transplantation
Interventions
Enteric-coated mycophenolate sodium (EC-MPS), Mycophenolate mofetil, Placebo to mycophenolate sodium, Placebo to mycophenolate mofetil
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
53
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 40 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2011 · Synced Oct 22, 2026, 5:10 AM EDT
Completed No phase listed Observational Results available

Gastrointestinal Symptoms in Postural Orthostatic Tachycardia Syndrome

NCT03263819
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Oral glucose tolerance test
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
26 participants
Timeline
2017 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 8, 2024 · Synced Oct 22, 2026, 5:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Perceived Lactose Intolerance

NCT01331265
View directory record Official record
Conditions
Lactose Intolerance
Interventions
Not listed
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
3,815 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 14, 2020 · Synced Oct 22, 2026, 5:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Muscle Accrual and Function in Cystic Fibrosis-Impact of Glucose Intolerance

NCT02776098
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Not listed
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
12 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2024
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 7, 2024 · Synced Oct 22, 2026, 5:10 AM EDT