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Showing 1–24 of 64 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Duodenal Ulcer Clear all
Completed No phase listed Observational

Proton Pump Inhibitor (PPI) Therapy for Newly Diagnosed Esophagitis

NCT00586963
View directory record Official record
Conditions
Erosive Esophagitis, Reflux Esophagitis, GERD
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 22, 2010 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Dexlansoprazole MR and Lansoprazole on Healing of Erosive Esophagitis

NCT00251693
View directory record Official record
Conditions
Esophagitis, Reflux, Esophagitis, Peptic
Interventions
Dexlansoprazole MR, Lansoprazole
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
2,038 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
96
States / cities
Alabaster, Alabama • Birmingham, Alabama • Huntsville, Alabama + 93 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2012 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 4 Interventional

NEXIUM® in the Treatment of Moderate and Severe Erosive Esophagitis

NCT00206180
View directory record Official record
Conditions
Erosive Esophagitis, Reflux Esophagitis, Gastroesophageal Reflux Disease
Interventions
esomeprazole magnesium (oral medication)
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
39
States / cities
Alabaster, Alabama • Anaheim, California • Dinuba, California + 36 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2009 · Synced Sep 9, 2026, 12:55 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 29, 2021 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational

H. Pylori Testing for Patients With Non-specific Upper Abdominal Pain in the Emergency Department

NCT01376414
View directory record Official record
Conditions
Gastritis, Peptic Ulcer, Peptic Ulcer Perforation, Stomach Ulcer
Interventions
Urea Breath Test (UBT) for H. pylori infection
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 25, 2016 · Synced Sep 9, 2026, 12:55 PM EDT
Terminated Phase 3 Interventional

Clopidogrel and the Optimization of Gastrointestinal Events (COGENT-1)

NCT00557921
View directory record Official record
Conditions
Acute Coronary Syndrome, Myocardial Infarction, Coronary Artery Disease, Percutaneous Coronary Intervention
Interventions
CGT-2168 (clopidogrel 75 mg/omeprazole 20 mg) and aspirin, Plavix (clopidogrel 75 mg) and aspirin
Drug
Lead sponsor
Cogentus Pharmaceuticals
Industry
Eligibility
21 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
247
States / cities
Alexander City, Alabama • Birmingham, Alabama • Geneva, Alabama + 205 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2009 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational

Treatment of Zollinger-Ellison Syndrome

NCT00001241
View directory record Official record
Conditions
Zollinger Ellison Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
1989 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational

Helicobacter Pylori Sample Collection Protocol Post Therapy Subjects

NCT03060733
View directory record Official record
Conditions
Helicobacter Pylori Infection, Gastric Ulcer, Nausea, Abdominal Pain, Weight Loss, Stomach Ulcer, Loss of Appetite, Bloating
Interventions
Post-Therapy
Other
Lead sponsor
DiaSorin Inc.
Industry
Eligibility
22 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
4
States / cities
Mission Hills, California • Great Neck, New York • Mentor, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2019 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Not applicable Interventional

The Role of HIF-2a in the Pathogenesis of Reflux Esophagitis

NCT01733810
View directory record Official record
Conditions
Esophagitis, Reflux Esophagitis, Gastroesophageal Reflux Disease
Interventions
Cessation of Acid Suppressing Medications
Other
Lead sponsor
Dallas VA Medical Center
Federal
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational

Evaluating Patients With Abnormal Levels of Gastric Acid

NCT00001240
View directory record Official record
Conditions
Achlorhydria, Gastrinoma, Zollinger Ellison Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
1989 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational

Evaluating Pancreatic Tumors in Patients With Zollinger-Ellison Syndrome

NCT00001254
View directory record Official record
Conditions
Zollinger Ellison Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 100 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1991
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 3 Interventional Results available

Comparison of Dexlansoprazole MR to Placebo on the Ability to Maintain Healing in Subjects With Healed Erosive Esophagitis

NCT00255151
View directory record Official record
Conditions
Esophagitis, Reflux, Esophagitis, Peptic
Interventions
Dexlansoprazole MR, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
451 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
100
States / cities
Anniston, Alabama • Hueytown, Alabama • Huntsville, Alabama + 97 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2012 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prognostic Indicators as Provided by the EPIC ClearView

NCT01476995
View directory record Official record
Conditions
Coronary Artery Disease, Congestive Heart Failure, Valvular Heart Disease, Atrial Fibrillation, Hypertension, Pyelonephritis, Acute Renal Failure, Renal Failure, Viral Hepatitis, Alcoholic Hepatitis, Steatohepatitis, Cirrhosis, Asthma, COPD, Bronchitis, Emphysema, Pneumonia, Inflammatory Bowel Disease, Crohn's Disease, Ulcerative Colitis, Diverticulitis, Peptic Ulcer Disease, Irritable Bowel Syndrome, Cholecystitis, Pancreatitis, Malabsorption Disorders, Celiac Sprue, Diabetes
Interventions
Not listed
Lead sponsor
Epic Research & Diagnostics, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
353 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 21, 2011 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 1 Interventional

Cixutumumab, Everolimus, and Octreotide Acetate in Treating Patients With Advanced Low to Intermediate Grade Neuroendocrine Carcinoma

NCT01204476
View directory record Official record
Conditions
Gastrin-Producing Neuroendocrine Tumor, Lung Carcinoid Tumor, Metastatic Digestive System Neuroendocrine Tumor G1, Pancreatic Glucagonoma, Pancreatic Insulinoma, Pancreatic Polypeptide Tumor, Paraganglioma, Recurrent Digestive System Neuroendocrine Tumor G1, Recurrent Merkel Cell Carcinoma, Recurrent Pancreatic Neuroendocrine Carcinoma, Regional Digestive System Neuroendocrine Tumor G1, Somatostatin-Producing Neuroendocrine Tumor, Stage III Merkel Cell Carcinoma, Stage IV Merkel Cell Carcinoma, Thyroid Gland Medullary Carcinoma
Interventions
Cixutumumab, Everolimus, Laboratory Biomarker Analysis, Octreotide Acetate, Pharmacological Study
Biological · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 14, 2016 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 2 Interventional

Interferon and Octreotide to Treat Zollinger-Ellison Syndrome and Advanced Non-B Islet Cell Cancer

NCT00001228
View directory record Official record
Conditions
Islet Cell Adenoma, Zollinger Ellison Syndrome
Interventions
Interferon
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1988 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 9, 2026, 12:55 PM EDT
Recruiting Phase 4 Interventional

OPEN Versus InTact Capsule Proton Pump Inhibitors for the Treatment of Marginal Ulcers

NCT05799105
View directory record Official record
Conditions
Marginal Ulcer
Interventions
Omeprazole 40 milligrams
Drug
Lead sponsor
Stephen Firkins
Other
Eligibility
Not listed
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Trial to Assess the Effects of an Antimicrobial Mouthwash on the Esophageal Microbiome

NCT02513784
View directory record Official record
Conditions
Esophageal Adenocarcinoma, Barrett's Esophagus, Reflux Esophagitis
Interventions
Chlorhexidine gluconate
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 21, 2022 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Dexlansoprazole MR and Lansoprazole on Healing of Erosive Esophagitis

NCT00251719
View directory record Official record
Conditions
Esophagitis, Reflux, Esophagitis, Peptic
Interventions
Dexlansoprazole MR, Lansoprazole
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
2,054 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
100
States / cities
Anniston, Alabama • Hueytown, Alabama • Huntsville, Alabama + 97 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2012 · Synced Sep 9, 2026, 12:55 PM EDT
Completed No phase listed Observational

Registry for Upper Gastrointestinal Bleeding

NCT04211194
View directory record Official record
Conditions
Peptic Ulcer Hemorrhage, Peptic Ulcer, Acute With Hemorrhage
Interventions
Upper GI Endoscopy
Procedure
Lead sponsor
AdventHealth
Other
Eligibility
18 Years and older
Enrollment
2,999 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Feb 16, 2022 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 2Phase 3 Interventional

Rates of Gastric Ulcer by Endoscopy in Knee Osteoarthritis Patients Receiving LT-NS001 Versus Naprosyn®

NCT01063920
View directory record Official record
Conditions
Osteoarthritis
Interventions
LT-NS001, Naprosyn®
Drug
Lead sponsor
Logical Therapeutics
Industry
Eligibility
45 Years to 80 Years
Enrollment
534 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
65
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2011 · Synced Sep 9, 2026, 12:55 PM EDT
Terminated Not applicable Interventional

Quantifying Effects of Treatment of Pediatric Dysphonia

NCT00237679
View directory record Official record
Conditions
Voice Disorders, Gastroesophageal Reflux
Interventions
Neuromuscular Electrical Stimulation, Unstimulated
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
6 Years to 11 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2015 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Celebrex Low Dose ASA Study Examining the Incidence of Gastroduodenal Ulcers in a Healthy Population

NCT00137033
View directory record Official record
Conditions
Peptic Ulcers
Interventions
Celecoxib, Naproxen, ASA
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
50 Years to 75 Years
Enrollment
605 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
23
States / cities
Anaheim, California • San Diego, California • Farmington, Connecticut + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2021 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 3 Interventional Results available

Study of Esomeprazole 20 mg or 40 mg vs Placebo Effectiveness on the Occurrence of Peptic Ulcers in Subjects on Low Dose Acetylsalicylic Acid (LDA)

NCT00441727
View directory record Official record
Conditions
Gastric Ulcer, Duodenal Ulcer
Interventions
Esomeprazole 40 mg, Esomeprazole 20 mg, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
2,426 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
55
States / cities
Birmingham, Alabama • Tucson, Arizona • Anaheim, California + 52 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2012 · Synced Sep 9, 2026, 12:55 PM EDT
Completed Phase 2 Interventional

The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid

NCT00001191
View directory record Official record
Conditions
Gastrinoma, Zollinger Ellison Syndrome
Interventions
Pantoprazole, Omeprazole
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
1983 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 9, 2026, 12:55 PM EDT