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Showing 1–24 of 312 matching trials from the live ClinicalTrials.gov search.
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Withdrawn Phase 2 Interventional

Whether Proton Pump Inhibitors, Administered Prior to or After Surgery, Can Reduce the Incidence and/or Severity of Difficulty Swallowing Foods and/or Liquids,Following Anterior Cervical Surgery

NCT03488147
View directory record Official record
Conditions
Dysphagia, GERD, Degenerative Joint Disease
Interventions
Esomeprazole, Placebo Oral Tablet
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 22, 2020 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional

Pharmacokinetic Drug-drug Interaction Study of Dovitinib (TKI258) in Patients With Advanced Solid Tumors

NCT01596647
View directory record Official record
Conditions
Advanced Solid Tumors, Excluding Breast Cancer
Interventions
caffeine, diclofenac, omeprazole, midazolam, TKI258
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
5
States / cities
Kansas City, Kansas • Detroit, Michigan • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2020 · Synced Sep 4, 2026, 5:14 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 4, 2026, 5:14 PM EDT
Completed Phase 2 Interventional Results available

Cellcept for Treatment of Juvenile Neuronal Ceroid Lipofuscinosis

NCT01399047
View directory record Official record
Conditions
Juvenile Neuronal Ceroid Lipofuscinosis
Interventions
Mycophenolate mofetil, Liquid Placebo
Drug
Lead sponsor
University of Rochester
Other
Eligibility
6 Years to 25 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 20, 2019 · Synced Sep 4, 2026, 5:14 PM EDT
Recruiting Not applicable Interventional

GERD Infant Feeding Therapeutics Trial (GIFT Trial)

NCT06114836
View directory record Official record
Conditions
GERD in Infants
Interventions
Omeprazole, AR formula
Drug · Other
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
1 Day to 8 Months
Enrollment
369 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess CYP3A4 Modulator, Oral Contraceptive, and pH Modifier Drug Interactions for ABI-H2158 in Healthy Adults

NCT04142762
View directory record Official record
Conditions
Chronic Hepatitis B
Interventions
ABI-H2158, Itraconazole, Rifampin, Midazolam, Ethinyl Estradiol / Levonorgestrel, Esomeprazole, Placebo matching oral contraceptive
Drug
Lead sponsor
Assembly Biosciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 4, 2026, 5:14 PM EDT
Not listed Phase 4 Interventional

EoE RCT Fluticasone and Omeprazole vs Fluticasone Alone

NCT03781596
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Retrospective evaluation of endoscopy prior to study drug, Symptom Survey, Medication Compliance Phone Call, Endoscopy while on study drug, Fluticasone, Omeprazole, Placebo oral capsule
Diagnostic Test · Other · Drug
Lead sponsor
Claire Daniels
Federal
Eligibility
6 Years to 60 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 19, 2018 · Synced Sep 4, 2026, 5:14 PM EDT
Terminated Phase 4 Interventional Results available

Pancreatic Enzyme Supplementation for Celiac Disease

NCT02475369
View directory record Official record
Conditions
Celiac Disease
Interventions
pancrelipase
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 11, 2021 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A 5-Period, Single Dose, Phase 1 Study in Healthy Elderly Subjects to Assess Relative Bioavailability and Food Effect of Two Oral Formulations of GSK1325756 (Free Base vs HBr Salt) and Food Effect on the HBr Formulation When Given With Omeprazole

NCT02453022
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Danirixin HBr 50 mg IR Tablet, Danirixin FB 50 mg IR Tablet, Prilosec (omeprazole) 40mg Delayed-Release capsule
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years to 80 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2018 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional

Phase 1 Pharmacokinetics of Intravenous Nexium in Children

NCT00474019
View directory record Official record
Conditions
Pharmacokinetics
Interventions
esomeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
Up to 17 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
11
States / cities
Little Rock, Arkansas • Hartford, Connecticut • Park Ridge, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2010 · Synced Sep 4, 2026, 5:14 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Drug-Drug Interaction Study to Evaluate the Effects of Ecopipam on the Pharmacokinetics of Multiple Substrates

NCT04764851
View directory record Official record
Conditions
Drug-Interactions
Interventions
ecopipam HCl ~2mg/kg/day, Cohort 1 Probe Cocktail, Cohort 2 Probe Cocktail, Cohort 3 Probe Cocktail
Drug · Combination Product
Lead sponsor
Emalex Biosciences Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Trial to Evaluate the Effect of Esomeprazole on the Pharmacokinetics of Emraclidine in Healthy Adult Participants

NCT06366243
View directory record Official record
Conditions
Healthy Participants
Interventions
Emraclidine, Esomeprazole
Drug
Lead sponsor
Cerevel Therapeutics, LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Dilworth, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 23, 2024 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug-Drug Interaction Study to Evaluate the Effects of Ecopipam on the Pharmacokinetics of Multiple Substrates for Drug Metabolism and Transport

NCT05334108
View directory record Official record
Conditions
Drug Interaction
Interventions
Ecopipam, Cohort 1 Probe Substrate Cocktail, Cohort 2 Probe Substrate, Cohort 3 Probe Substrate Cocktail
Drug · Combination Product
Lead sponsor
Emalex Biosciences Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 11, 2022 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 4 Interventional

Esomeprazole for Treatment of GERD in Pediatric Patients

NCT00228527
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD), Erosive Esophagitis, Non-erosive Esophagitis
Interventions
Esomeprazole (Nexium)
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
1 Year to 11 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
24
States / cities
Mobile, Alabama • Phoenix, Arizona • Wilmington, Delaware + 21 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2010 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 2Phase 3 Interventional Results available

The Role Of Gastroesophageal Reflux Disease (GERD) in Eosinophilic Esophagitis

NCT00728481
View directory record Official record
Conditions
Eosinophilic Esophagitis, Gastroesophageal Reflux Disease, EE, GERD
Interventions
Esomeprazole, Budesonide
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 13, 2016 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 3 Interventional Results available

Rabeprazole Extended-Release, 50 mg, Versus Esomeprazole, 40 mg, for Healing and Symptomatic Relief of Moderate to Severe Erosive Gastroesophageal Reflux Disease (GERD)

NCT00658775
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD)
Interventions
Rabeprazole sodium, Esomeprazole
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
1,069 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Moline, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 20, 2015 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Omeprazole and Ritonavir on GSK2336805 Pharmacokinetics in Healthy Adults

NCT01458054
View directory record Official record
Conditions
Hepatitis C
Interventions
Cohort 1 (GSK2336805 60mg x 1 dose, Omeprazole 40 mg q24h x 4 days, GSK2336805 60 mg x 1 dose and Omeprazole 40 mg x 1 dose), Cohort 2 (GSK2336805 30mg x 1 dose, Ritonavir 100mg q12h x 4 days, and Ritonavir 100mg q12h x 1 dose)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jul 20, 2017 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Early Phase 1 Interventional

A Trial of Omeprazole and Low Dose Aspirin to Identify Colorectal Biomarkers of Preventive Efficacy

NCT06378398
View directory record Official record
Conditions
Colorectal Neoplasia
Interventions
Omeprazole, Aspirin
Drug
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years to 75 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Ann Arbor, Michigan • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 4, 2026, 5:14 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 21, 2026 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of Pharmacokinetic Interaction Between GSK3640254 and Caffeine, Metoprolol, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, and Pravastatin in Healthy Adults

NCT04425902
View directory record Official record
Conditions
HIV Infections
Interventions
GSK3640254 200 mg, Caffeine 200 mg, Metoprolol 100 mg, Montelukast 10 mg, Flurbiprofen 100 mg, Omeprazole 40 mg, Midazolam 5 mg (2.5 mL), Digoxin 0.25 mg, Pravastatin 40 mg
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Jan 4, 2024 · Synced Sep 4, 2026, 5:14 PM EDT
Terminated Phase 1 Interventional

A Study to Assess the Effects of Itraconazole, Rifampicin, and Omeprazole on Pharmacokinetics of Adavosertib

NCT04959266
View directory record Official record
Conditions
Advanced Solid Tumours
Interventions
Adavosertib, Itraconazole, Rifampicin, Omeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
3
States / cities
Portland, Oregon • Austin, Texas • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 15, 2022 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug-Drug Interaction Study With AZD9291 and Omeprazole in Healthy Volunteers

NCT02224053
View directory record Official record
Conditions
Healthy Volunteer
Interventions
Pharmacokinetic sampling - AZD9291, AZD9291 tablet dosing, Omeprazole tablet dosing, Pharmacokinetic sampling - AZ5140 and AZ7550
Procedure · Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
136 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
Overland Park, Kansas • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 23, 2016 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 3 Interventional Results available

Phase 3/Safety & Efficacy of Esomeprazole in Infants

NCT00468559
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD)
Interventions
Open Label Run In Esomeprazole, Double Blind Esomeprazole, Double Blind Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
1 Month to 11 Months
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
14
States / cities
Phoenix, Arizona • Atlanta, Georgia • Park Ridge, Illinois + 11 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2014 · Synced Sep 4, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Drug-Drug Interaction Study of Omeprazole and PA21

NCT01452906
View directory record Official record
Conditions
Healthy
Interventions
PA21 and Omeprazole with food, No PA21; Omeprazole with food, PA21 with food, Omeprazole 2hrs later
Drug
Lead sponsor
Vifor Pharma
Industry
Eligibility
20 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Anaheim, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2011 · Synced Sep 4, 2026, 5:14 PM EDT