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Showing 1–24 of 50 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Helicobacter Pylori Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Clinical Experiment of Helicobacter Pylori Transmission

NCT00550368
View directory record Official record
Conditions
Infection, Achlorhydria
Interventions
Biological intervention: Enteropathogenic E. coli
Biological
Lead sponsor
Stanford University
Other
Eligibility
35 Years to 59 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2016 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Phase 3 Interventional

Bag Mode BreathID Hp Validation Versus Endoscopy in Detection of Helicobacter Pylori

NCT02010112
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
Breath Test Collection bags
Other
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years and older
Enrollment
193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
9
States / cities
Baltimore, Maryland • Chevy Chase, Maryland • Detroit, Michigan + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2022 · Synced Sep 10, 2026, 11:01 PM EDT
Recruiting Not applicable Interventional

H. Pylori Eradication With Argon Plasma During Endoscopy

NCT06529159
View directory record Official record
Conditions
Helicobacter Pylori Infection, Helicobacter Pylori, Helicobacter Pylori Gastrointestinal Tract Infection, H. Pylori Infection, H. Pylori Gastrointestinal Disease
Interventions
HEAPE, Pre-HEAPE
Procedure
Lead sponsor
Christopher C. Thompson, MD, MSc
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 10, 2026, 11:01 PM EDT
Completed No phase listed Observational

Risk Factors for Gastric Disease in Pediatric Helicobacter Pylori (H. Pylori)

NCT00212225
View directory record Official record
Conditions
Helicobacter Infections, Gastritis, Peptic Ulcer
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
6 Months to 18 Years
Enrollment
755 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2007
U.S. locations
3
States / cities
Miami, Florida • Atlanta, Georgia • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 12, 2010 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Breath Ammonia Method for H. Pylori Detection: Phase II

NCT00194688
View directory record Official record
Conditions
Helicobacter Infections
Interventions
H. pylori treatment
Drug
Lead sponsor
University of Washington
Other
Eligibility
21 Years and older
Enrollment
278 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 10, 2008 · Synced Sep 10, 2026, 11:01 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

PyloPlus Urea Breath Test System Pediatric Safety and Efficacy Study

NCT05276557
View directory record Official record
Conditions
Helicobacter Pylori, Safety, Efficacy
Interventions
PyloPlus Urea Breath Test System, Stool Antigen Test
Combination Product · Diagnostic Test
Lead sponsor
ARJ Medical, Inc.
Industry
Eligibility
3 Years to 17 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
3
States / cities
Doral, Florida • Orlando, Florida • El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 10, 2026, 11:01 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Epidemiology of H. Pylori Transmission

NCT02740140
View directory record Official record
Conditions
Communicable Diseases
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 55 Years
Enrollment
1,750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
2
States / cities
San Jose, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Sep 10, 2026, 11:01 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

H. Pylori Eradication Using Pyklear in Adults in El Paso, Texas: a Pilot Study

NCT01335334
View directory record Official record
Conditions
H. Pylori Infection
Interventions
bismuth subcitrate potassium, metronidazole,tetracycline hydrochloride and omeprazole
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Apr 13, 2011 · Synced Sep 10, 2026, 11:01 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Feasibility Study of Phototherapy System to Treat H Pylori

NCT00306280
View directory record Official record
Conditions
Helicobacter Pylori
Interventions
Phototherapy
Device
Lead sponsor
LumeRx
Industry
Eligibility
18 Years to 90 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
3
States / cities
Boston, Massachusetts • Worcester, Massachusetts • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 19, 2006 · Synced Sep 10, 2026, 11:01 PM EDT
Recruiting No phase listed Observational

The GAstric Precancerous Conditions Study

NCT04191551
View directory record Official record
Conditions
Gastric Cancer, Intestinal Metaplasia of Gastric Mucosa, Helicobacter Pylori Infection, Atrophic Gastritis
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
35 Years to 84 Years
Enrollment
600 participants
Timeline
2018 – 2028
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Sep 10, 2026, 11:01 PM EDT
Terminated Phase 3 Interventional Results available

Treating H. Pylori in Parkinson's Patients With Motor Fluctuations

NCT00664209
View directory record Official record
Conditions
Parkinson's Disease, Helicobacter Infections, Motor Fluctuations
Interventions
clartihromycin, amoxicillin, and omeprazole, placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
Male only
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 1, 2017 · Synced Sep 10, 2026, 11:01 PM EDT
Completed No phase listed Observational

Specimen Collection Study for H. Pylori Testing

NCT02970110
View directory record Official record
Conditions
Helicobacter Infections
Interventions
Not listed
Lead sponsor
Biomerica
Industry
Eligibility
21 Years to 75 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
4
States / cities
Tucson, Arizona • Los Angeles, California • Medley, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Assessment and Management of Chronic Dyspepsia in Eastern Uganda

NCT04525664
View directory record Official record
Conditions
Helicobacter Pylori Infection, Dyspepsia
Interventions
Clarithromycin 500mg, Amoxicillin 1000 MG, Omeprazole 40 MG, Omeprazole 20 MG Oral Tablet
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
376 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 24, 2020 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Phase 4 Interventional

Comparison of the Nighttime Effects of Two Different Drugs on Subjects With GERD

NCT00304421
View directory record Official record
Conditions
Gastroesophageal Reflux Disease
Interventions
rabeprazole, pantoprazole
Drug
Lead sponsor
VA Greater Los Angeles Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2007 · Synced Sep 10, 2026, 11:01 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 10, 2026, 11:01 PM EDT
Completed Phase 3 Interventional Results available

Urea Breath Test (UBT) With Breath Hp System /BreathID Hp Lab System Pediatrics

NCT02905825
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
BreathID® Hp System, BreathID® Hp Lab System, Stool Test
Device · Drug · Diagnostic Test
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
3 Years to 18 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
5
States / cities
Shreveport, Louisiana • Flowood, Mississippi • Nashville, Tennessee + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2022 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Effect on 24-hour, Intragastric pH of RAB ER 50-mg Capsules Compared With Esomeprazole (Nexium) 40 mg Capsules and Rabeprazole (Aciphex) 20-mg Tablets

NCT01153659
View directory record Official record
Conditions
Healthy
Interventions
E3810, Aciphex (rabeprazole), Nexium (esomeprazole)
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 31, 2013 · Synced Sep 10, 2026, 11:01 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Changes Associated With H. Pylori and Gastric Carcinogenesis

NCT02164409
View directory record Official record
Conditions
Bacterial Infection Due to Helicobacter Pylori (H. Pylori)
Interventions
Endoscopy tissue collection
Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Phase 2 Interventional Results available

ARJ C13 Urea Breath Test System

NCT04036838
View directory record Official record
Conditions
H. Pylori Infection
Interventions
PyloPlus UBT System, Histology, Rapid Urease Test, H.pylori Culture
Combination Product · Diagnostic Test
Lead sponsor
ARJ Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
415 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
Clearwater, Florida • Clermont, Florida • Largo, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 22, 2019 · Synced Sep 10, 2026, 11:01 PM EDT
Not yet recruiting Phase 3 Interventional

Personalized vs Standard of Care Treatment for Helicobacter Pylori Eradication Among Veterans

NCT07104318
View directory record Official record
Conditions
Helicobacter Pylori
Interventions
Bismuth quadruple therapy with optimized PPI, Bismuth quadruple therapy with standard PPI, Clarithromycin triple therapy with optimized PPI, Clarithromycin triple therapy with standard PPI, Standard bismuth quadruple therapy
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 10, 2026, 11:01 PM EDT
Completed Phase 3 Interventional Results available

ERADICATE Hp2 - Treating Helicobacter Pylori With RHB-105 Compared to Active Comparator

NCT03198507
View directory record Official record
Conditions
Helicobacter Pylori Infection, Dyspepsia
Interventions
RHB-105, Active Comparator
Drug
Lead sponsor
RedHill Biopharma Limited
Industry
Eligibility
18 Years to 70 Years
Enrollment
455 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
55
States / cities
Dothan, Alabama • Phoenix, Arizona • Tucson, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2020 · Synced Sep 10, 2026, 11:01 PM EDT
Completed No phase listed Observational

Role of Helicobacter Pylori and Its Toxins in Lung and Digestive System Diseases

NCT00366509
View directory record Official record
Conditions
Pulmonary Disease, Oropharyngeal Disease, Lymphangioleiomyomatosis, Pulmonary Fibrosis, Asthma, Sarcoidosis
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 1, 2021 · Synced Sep 10, 2026, 11:01 PM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Helicobacter Pylori and Body Iron in Adults

NCT03146325
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
BISMUTH TETRACYCLINE METRONIDAZOLE OMEPRAZOLE, MATCHING PLACEBO
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 64 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Sep 10, 2026, 11:01 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Oral H. Pylori Prevalence in Intellectually & Developmentally Disabled Adults

NCT00841490
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
Not listed
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 90 Years
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
2
States / cities
Louisville, Kentucky • Somerset, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 13, 2017 · Synced Sep 10, 2026, 11:01 PM EDT