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ClinicalTrials.gov public records Last synced Oct 3, 2026, 8:55 PM EDT

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Showing 49–72 of 153 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: PPI treatment Clear all
Not yet recruiting Phase 2Phase 3 Interventional

Efficacy and Safety of Aspirin and Lansoprazole for Prevention of Preterm Birth in High-Risk Pregnant Women: A Biomarker-Enriched Trial

NCT07337655
View directory record Official record
Conditions
Pre-term Birth
Interventions
Low-Dose Aspirin Dose: 81 mg & Lansoprazole Dose: 30 mg, Standard of Care
Drug · Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
670 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Oct 3, 2026, 8:55 PM EDT
Terminated Not applicable Interventional Results available

Effect of Acid Suppression Medication on Pediatric Microbiome

NCT02016820
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Omeprazole (suspension), Lifestyle Modification
Drug · Other
Lead sponsor
Columbia University
Other
Eligibility
0 Years to 4 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 26, 2023 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of Effect of Food and a Proton Pump Inhibitor on Selpercatinib (LY3527723) in Healthy Participants

NCT05468164
View directory record Official record
Conditions
Healthy
Interventions
Selpercatinib, Omeprazole
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 19, 2025 · Synced Oct 3, 2026, 8:55 PM EDT
Terminated Not applicable Interventional Results available

COPD Patients Diagnosed With GERD,COPD Exacerbations After Treatment With High Dose PPI

NCT00523367
View directory record Official record
Conditions
Gastroesophageal Reflux, Chronic Obstructive Pulmonary Disease
Interventions
24 hour pH testing
Procedure
Lead sponsor
University of Florida
Other
Eligibility
40 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 18, 2013 · Synced Oct 3, 2026, 8:55 PM EDT
Recruiting Phase 4 Interventional

The Mechanism Versus PPI Trial

NCT06999577
View directory record Official record
Conditions
Laryngopharyngeal Reflux, Cough, Throat Clearing, Dysphonia, Reflux
Interventions
Omeprazole 40 MG, Laryngeal Recalibration Therapy, GERD Lifestyle Recommendations
Drug · Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 89 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
San Deigo, California
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 4 Interventional

Role of Pain Modulation in GERD Patients Who Failed Standard Dose Proton Pump Inhibitors (PPI)

NCT00251732
View directory record Official record
Conditions
Gastroesophageal Reflux Disease
Interventions
Standard dose (once daily) PPI plus low-dose antidepressant, Double dose PPI plus evening placebo, Rabeprazole , placebo, placebo
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 19, 2010 · Synced Oct 3, 2026, 8:55 PM EDT
Recruiting No phase listed Observational

Changes in Esophageal Distensibility With Proton Pump Inhibitors in Patients With Esophageal Eosinophilia: A Pilot Study

NCT03312686
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
endoflip
Diagnostic Test
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The EndoGastric Solutions TEMPO Trial

NCT01647958
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD)
Interventions
EsophyX System with SerosaFuse fasteners, PPI
Device · Drug
Lead sponsor
EndoGastric Solutions
Industry
Eligibility
18 Years to 80 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Redmond, Washington
Source: ClinicalTrials.gov public record
Updated Nov 23, 2020 · Synced Oct 3, 2026, 8:55 PM EDT
Withdrawn Not applicable Interventional

Confocal Endomicroscopy for Non-Erosive Reflux Disease (CE NERD)

NCT02039869
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Non Erosive Reflux Disease, Dyspepsia
Interventions
Confocal endomicroscopy, Proton pump inhibitor, Sucralfate
Device · Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 79 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
3
States / cities
Kenner, Louisiana • Charleston, South Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 9, 2015 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Precision Approach to PPI Therapy in Gastroesophageal Reflux Disease

NCT03619811
View directory record Official record
Conditions
Gastroesophageal Reflux, Laryngopharyngeal Reflux
Interventions
Reflux Band® Upper Esophageal Sphincter (UES) Assist Device
Diagnostic Test
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 89 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

HMPL-523 Food Effect and Proton Pump Inhibitor Study

NCT05571787
View directory record Official record
Conditions
Relapsed or Refractory Lymphoma
Interventions
HMPL-523, Rabeprazole
Drug
Lead sponsor
Hutchmed
Industry
Eligibility
18 Years to 55 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 23, 2023 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study To Investigate The Potential Effect Of Proton Pump Inhibitor On The Pharmacokinetics Of Palbociclib (PD-0332991)

NCT01918176
View directory record Official record
Conditions
Healthy
Interventions
Palbociclib alone, Palbociclib + Rabeprazole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
South Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 8, 2015 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Obesity on Proton Pump Inhibitors

NCT04248335
View directory record Official record
Conditions
Pediatric Obesity, NAFLD, GERD
Interventions
Lansoprazole, Pantoprazole, Midazolam
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
6 Years to 21 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Relative Bioavailability Study Evaluating Two New Encorafenib Formulations

NCT05446142
View directory record Official record
Conditions
Healthy
Interventions
Encorafenib capsule formulation (CAP), Encorafenib first formulation, Encorafenib second formulation, Rabeprazole tablet
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 23, 2024 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Effects of Food and Esomeprazole on the Pharmacokinetics of Crizotinib in a Coated Microsphere Formulation.

NCT03137134
View directory record Official record
Conditions
Healthy
Interventions
Crizotinib, Esomeprazole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 31, 2017 · Synced Oct 3, 2026, 8:55 PM EDT
Enrolling by invitation Not applicable Interventional

Targeting Hypervigilance and Autonomic Arousal: the Psycho-physiologic Model of Gastroesophageal Reflux Disease (GERD)

NCT04960566
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
Cognitive Behavioral Therapy, Sham-SOC Lifestyle Coaching
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
2
States / cities
Chicago, Illinois • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 3, 2026, 8:55 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 19, 2026 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess Pharmacokinetics (PK) of Brensocatib Alone and With Multiple Doses of Rifampin or Esomeprozole in Healthy Participants

NCT05826574
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Brensocatib, Rifampin, Esomeprazole
Drug
Lead sponsor
Insmed Incorporated
Industry
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 3 Interventional

Efficacy/Safety of Lansoprazole in Patients With Frequent Nighttime Heartburn

NCT00701259
View directory record Official record
Conditions
Frequent Heartburn
Interventions
Lansoprazole, placebo
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
852 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
1
States / cities
Parsippany, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 15, 2010 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 2 Interventional Results available

Anemia Studies in CKD: Erythropoiesis Via a Novel Prolyl Hydroxylase Inhibitor (PHI) Daprodustat- Iron (ASCEND: Fe)

NCT03457701
View directory record Official record
Conditions
Anaemia
Interventions
Daprodustat, rhEPO, Ferrous sulfate containing the stable iron isotope (57Fe), Ferrous sulfate containing the stable iron isotope (58Fe)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Fort Worth, Texas • Lufkin, Texas • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Relative Bioavailability and PPI Effects of CC-92480 Test and Reference Formulations in Healthy Subjects

NCT04211545
View directory record Official record
Conditions
Healthy Volunteer
Interventions
Rabeprazole, CC-92480
Drug
Lead sponsor
Celgene
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2020 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Impact of Proton Pump Inhibitors on the Fecal Microbiome

NCT01822977
View directory record Official record
Conditions
Healthy, Clostridium Difficile Infection
Interventions
omeprazole
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 20, 2014 · Synced Oct 3, 2026, 8:55 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Study of GS-4571 in Healthy Participants, Nondiabetic Obese Participants, and Nonobese Participants With Type 2 Diabetes Mellitus (T2DM)

NCT06562907
View directory record Official record
Conditions
Weight Management
Interventions
GS-4571, Placebo, Omeprazole
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 55 Years
Enrollment
134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
3
States / cities
Miami, Florida • San Antonio, Texas • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 3, 2026, 8:55 PM EDT
Completed Phase 2 Interventional Results available

A Study in Patients With Erosive Esophagitis to Investigate Safety, Tolerability, and Healing Rates After 4 Weeks Treatment of X842 or Lansoprazole and Symptom Pattern During Subsequent 4 Weeks Treatment With Lansoprazole

NCT05055128
View directory record Official record
Conditions
Erosive Esophagitis
Interventions
X842, X842 Dummy, Lansoprazole, Lansoprazole Dummy
Drug
Lead sponsor
Cinclus Pharma Holding AB
Industry
Eligibility
18 Years to 75 Years
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 3, 2026, 8:55 PM EDT