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Showing 1–24 of 39 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: H. Pylori Infection Clear all
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 25, 2026, 1:38 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Standard Triple Therapy vs Sequential Therapy in Treatment of H Pylori Infection

NCT01723059
View directory record Official record
Conditions
Helicobacter Infection
Interventions
Standard Triple Therapy, Sequential Therapy
Drug
Lead sponsor
Dallas VA Medical Center
Federal
Eligibility
18 Years to 85 Years
Enrollment
184 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 6, 2012 · Synced Sep 25, 2026, 1:38 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

300 Antibody Diagnostic Test Kit

NCT01646411
View directory record Official record
Conditions
Acute Bacterial Infections, Acute Viral Infections
Interventions
Not listed
Lead sponsor
The Plasma Source
Industry
Eligibility
18 Years to 70 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Southampton, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 19, 2012 · Synced Sep 25, 2026, 1:38 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Vonoprazan Compared to Lansoprazole in Participants With Helicobacter Pylori Infection

NCT04167670
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
Vonoprazan, Amoxicillin, Clarithromycin, Lansoprazole
Drug
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,046 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
106
States / cities
Anniston, Alabama • Athens, Alabama • Birmingham, Alabama + 84 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Sep 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
Completed No phase listed Observational

Helicobacter Pylori and Dry Eye

NCT00083291
View directory record Official record
Conditions
Helicobacter Infections
Interventions
Not listed
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 25, 2026, 1:38 PM EDT
Withdrawn Phase 3 Interventional

Safety, Efficacy of Pylera BID Dosing in Eradication of H. Pylori

NCT00712413
View directory record Official record
Conditions
Helicobacter Pylori Infection
Interventions
OBMT
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
2
States / cities
Ann Arbor, Michigan • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 8, 2017 · Synced Sep 25, 2026, 1:38 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 25, 2026, 1:38 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 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
Completed Phase 3 Interventional Results available

ERADICATE Hp - Treating Helicobacter Pylori With RHB-105

NCT01980095
View directory record Official record
Conditions
Dyspepsia, Helicobacter Pylori Infection
Interventions
RHB-105, Placebo
Drug
Lead sponsor
RedHill Biopharma Limited
Industry
Eligibility
18 Years to 65 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
12
States / cities
Anaheim, California • Chino, California • Jupiter, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2019 · Synced Sep 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Helicobacter Pylori Eradication Trial to Reduce Iron Deficiency in Children

NCT00364104
View directory record Official record
Conditions
Iron Deficiency
Interventions
Quadruple sequential Helicobacter pylori eradication + iron sulfate, Quadruple sequential Helicobacter pylori eradication therapy, Ferrous sulfate, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
36 Months to 120 Months
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2009 · Synced Sep 25, 2026, 1:38 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 25, 2026, 1:38 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 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
Withdrawn No phase listed Observational

An Investigation of the Association Between Helicobacter Pylori Infection and Abdominal Pain in Cystic Fibrosis Patients

NCT00765401
View directory record Official record
Conditions
Cystic Fibrosis, Abdominal Pain, Helicobacter Pylori Infection
Interventions
Not listed
Lead sponsor
Penn State University
Other
Eligibility
5 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced Sep 25, 2026, 1:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Vonoprazan Concentrations in Breast Milk of Healthy Lactating Women Receiving Vonoprazan 20 mg Once Daily or Vonoprazan 20 mg Twice Daily

NCT06391177
View directory record Official record
Conditions
Erosive Esophagitis, Heartburn, Symptomatic Nonerosive Gasroesophageal Reflux Disease, Helicobacter Pylori Infection
Interventions
Vonoprazan
Drug
Lead sponsor
Phathom Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced Sep 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

The Effect of H. Pylori Infection on Iron Metabolism

NCT00202488
View directory record Official record
Conditions
Iron Deficiency Anemia, Helicobacter Pylori Infection
Interventions
H. pylori treatment
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2007
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 29, 2008 · Synced Sep 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
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 25, 2026, 1:38 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 25, 2026, 1:38 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Helicobacter Pylori Screening and Treatment in the At-risk South Florida Community- AIM 1

NCT07224035
View directory record Official record
Conditions
H Pylori Infection, H Pylori Gastritis, Gastric Cancer
Interventions
PYTEST® 14C-Urea Breath Test, VOQUEZNA® Triple Pak®
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 25, 2026, 1:38 PM EDT