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ClinicalTrials.gov public records Last synced Oct 7, 2026, 4:06 AM EDT

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Showing 49–72 of 113 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Proton Pump Inhibitor (PPI) Therapy Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

A Study for Multiple Tablet Forms of The Study Medicine (PF-07220060) in Healthy Adults

NCT05923411
View directory record Official record
Conditions
Healthy Participants
Interventions
Single dose of PF-07220060 as first Tablet Formulation, Single dose of PF-07220060 as second Tablet Formulation, Single dose of PF-07220060 as a Tablet Formulation, Single dose of PF-07220060 as a Tablet formulation under Rabeprazole administration, Single dose of PF-07220060 as third tablet formulation
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 65 Years
Enrollment
113 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 3 Interventional

Efficacy/Safety of Lansoprazole in Patients With Frequent Heartburn

NCT00390390
View directory record Official record
Conditions
Heartburn
Interventions
Lansoprazole
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
576 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
30
States / cities
Mobile, Alabama • Little Rock, Alaska • Chandler, Arizona + 26 more
Source: ClinicalTrials.gov public record
Updated May 25, 2010 · Synced Oct 7, 2026, 4:06 AM 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 7, 2026, 4:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of ALXN1840 (Non-coated) Administered With And Without Omeprazole In Healthy Adults

NCT05319899
View directory record Official record
Conditions
Healthy
Interventions
ALXN1840, Omeprazole
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
19 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 1, 2023 · Synced Oct 7, 2026, 4:06 AM EDT
Terminated Phase 1 Interventional

A Study to Evaluate the Safety, Pharmacokinetics, and Activity of GDC-0587 as a Monotherapy and in Combination With Giredestrant in Participants With Locally Advanced or Metastatic Estrogen Receptor-Positive and Human Epidermal Growth Factor Receptor 2-Negative (ER+/HER2-) Breast Cancer

NCT07214662
View directory record Official record
Conditions
Breast Cancer
Interventions
GDC-0587, Giredestrant, Omeprazole
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
2
States / cities
Grand Rapids, Michigan • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 3 Interventional Results available

Efficacy of Dexlansoprazole MR on Heartburn Control in Participants Previously Receiving Twice Daily Proton Pump Inhibitor Therapy

NCT00847808
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
Dexlansoprazole MR QD
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
52
States / cities
Hueytown, Alabama • Chandler, Arizona • Sierra Vista, Arizona + 49 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2012 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Not applicable Interventional Results available

Ablation of Intestinal Metaplasia Containing Dysplasia

NCT00282672
View directory record Official record
Conditions
Barrett Esophagus
Interventions
Ablation System plus anti-secretory medication, Sham procedure plus anti-secretory medication
Device
Lead sponsor
Medtronic - MITG
Industry
Eligibility
18 Years to 80 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
19
States / cities
Scottsdale, Arizona • Tucson, Arizona • Orange, California + 15 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 7, 2026, 4:06 AM 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 7, 2026, 4:06 AM EDT
Completed Phase 4 Interventional Results available

Pilot Study To Investigate The Association Between Acid Control And Heartburn Symptoms After Proton Pump Inhibitor Treatment

NCT02708355
View directory record Official record
Conditions
Heartburn
Interventions
Esomeprazole 20 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
2
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Oct 7, 2026, 4:06 AM 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 7, 2026, 4:06 AM EDT
Completed Phase 2 Interventional

A Study to Evaluate the Efficacy and Safety of Arbaclofen Placarbil (XP19986) as Adjunctive Therapy in Subjects With Gastroesophageal Reflux Disease (GERD)

NCT00978016
View directory record Official record
Conditions
Gastroesophageal Reflux Disease
Interventions
arbaclofen placarbil-Cohort 1, Placebo-Cohort 5, arbaclofen placarbil-Cohort 2, arbaclofen placarbil-Cohort 3, arbaclofen placarbil-Cohort 4, PPI
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
460 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
62
States / cities
Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 56 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2021 · Synced Oct 7, 2026, 4:06 AM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

EffCaMgCit to Prevent Mineral Metabolism and Renal Complications of Chronic PPI Therapy

NCT05998863
View directory record Official record
Conditions
Osteoporosis, Hypomagnesemia
Interventions
EffCaMgCit, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 99 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Trial to Evaluate the Effect of the Proton Pump Inhibitor Esomeprazole on the Single-dose Pharmacokinetics (PK) of Oral TAK-906 in Healthy Adult Participants

NCT03849690
View directory record Official record
Conditions
Healthy Volunteers
Interventions
TAK-906, Esomeprazole
Drug
Lead sponsor
Millennium Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Oct 7, 2026, 4:06 AM EDT
Suspended Phase 1Phase 2 Interventional

Effect of Azeliragon Combined With Stereotactic Radiation Therapy in Patients With Brain Metastases

NCT05789589
View directory record Official record
Conditions
Cancer, Metastasis, Metastatic Cancer, Brain Metastases, Brain Metastases, Adult
Interventions
Azeliragon, Stereotactic radiosurgery, Corticosteroid
Drug · Radiation
Lead sponsor
Baptist Health South Florida
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Randomized Trial of Medical and Surgical Treatments for Patients With GERD Symptoms That Are Refractory to Proton Pump Inhibitors

NCT01265550
View directory record Official record
Conditions
GERD
Interventions
Nissen fundoplication, baclofen, Desipramine
Device · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 64 Years
Enrollment
366 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
15
States / cities
Birmingham, Alabama • Tucson, Arizona • Loma Linda, California + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2020 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study of ALXN1840 (Coated and Non-coated) Administered With And Without Omeprazole In Healthy Adults

NCT05319912
View directory record Official record
Conditions
Healthy
Interventions
ALXN1840 Enteric-coated Tablet, ALXN1840 Non-coated Capsule, Omeprazole
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
19 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 2, 2023 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 3 Interventional Results available

Trial of IW-3718 for 8 Weeks in Patients With Persistent Gastroesophageal Reflux Disease (GERD) Receiving Proton Pump Inhibitors (PPIs)

NCT03561883
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD)
Interventions
IW-3718, placebo, Standard-dose PPIs QD
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
609 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
98
States / cities
Birmingham, Alabama • Dothan, Alabama • Peoria, Arizona + 81 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2021 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 4 Interventional Results available

Levothyroxine Sodium in Thyroidectomized Patients Taking Proton Pump Inhibitors

NCT03094416
View directory record Official record
Conditions
Hypothyroidism;Postablative
Interventions
levothyroxine sodium capsule, Proton pump inhibitor (PPI), Levothyroxine Sodium (LT4) Tablets
Drug
Lead sponsor
IBSA Institut Biochimique SA
Industry
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
9
States / cities
La Jolla, California • Ventura, California • Washington D.C., District of Columbia + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Early Phase 1 Interventional

The Effect of Sucralfate Slurry in Patients With Eosinophilic Esophagitis

NCT02353078
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Sucralfate, Intraluminal Impedance, Intraluminal Impedance
Drug · Procedure · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced Oct 7, 2026, 4:06 AM EDT
Terminated Phase 4 Interventional Results available

Safety and Efficacy of Lansoprazole 30mg Twice Daily in Treatment of Laryngitis Associated With Gastroesophageal Reflux

NCT00369265
View directory record Official record
Conditions
Laryngopharyngeal Reflux
Interventions
Lansoprazole, Sugar pill
Drug · Dietary Supplement
Lead sponsor
American Institute for Voice and Ear Research
Other
Eligibility
18 Years to 89 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
3
States / cities
Detroit, Michigan • Philadelphia, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2012 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Examine the Effect of Omeprazole, Famotidine, and an Acidic Beverage on the Pharmacokinetics of Entinostat in Healthy Adult Subjects

NCT02922933
View directory record Official record
Conditions
Volunteers, Healthy Volunteers, Human Volunteers, Normal Volunteers
Interventions
entinostat, Omeprazole, Famotidine
Drug · Dietary Supplement
Lead sponsor
Syndax Pharmaceuticals
Industry
Eligibility
19 Years to 55 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Tempe, Arizona • Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 16, 2018 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 1 Interventional

Whole Brain Radiotherapy (WBRT) With Sorafenib for Breast Cancer Brain Metastases (BCBM)

NCT01724606
View directory record Official record
Conditions
Breast Cancer, Brain Metastases
Interventions
Whole Brain Radiotherapy (WBRT), Sorafenib
Radiation · Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2022
U.S. locations
6
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Commack, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2022 · Synced Oct 7, 2026, 4:06 AM EDT
Not listed Phase 4 Interventional

Dexlansoprazole to Treat Laryngopharyngeal Reflux and Lingual Tonsil Hypertrophy

NCT01328652
View directory record Official record
Conditions
Laryngopharyngeal Reflux, Hypertrophy of Lingual Tonsil
Interventions
dexlansoprazole
Drug
Lead sponsor
Advanced Center for Specialty Care
Other
Eligibility
18 Years to 59 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 5, 2011 · Synced Oct 7, 2026, 4:06 AM EDT
Completed Phase 2 Interventional

ADX10059 as an add-on Therapy to Proton Pump Inhibitors (PPIs) in Patients With Gastroesophageal Reflux (GERD)

NCT00810485
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
ADX10059, ADX10059 Matching Placebo
Drug
Lead sponsor
Addex Pharma S.A.
Industry
Eligibility
18 Years to 70 Years
Enrollment
298 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
28
States / cities
Little Rock, Arizona • Tucson, Arizona • Anaheim, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2012 · Synced Oct 7, 2026, 4:06 AM EDT