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Showing 1–24 of 103 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Omeprazole 40 MG Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Bioequivalence of Single Oral Dose of Esomeprazole Capsule and Tablet Formulation in Healthy Participants

NCT03083639
View directory record Official record
Conditions
Healthy Participants
Interventions
Esomeprazole Capsule, Esomeprazole Tablet
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 55 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 13, 2019 · Synced Sep 24, 2026, 11:57 AM 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 24, 2026, 11:57 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study to Evaluate Effect of Belatacept on Pharmacokinetics of Inje Cocktail in Healthy Volunteers

NCT01766050
View directory record Official record
Conditions
Transplant Rejection
Interventions
Caffeine, Losartan, Omeprazole, Dextromethorphan, Midazolam, Belatacept
Drug · Biological
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 45 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 26, 2014 · Synced Sep 24, 2026, 11:57 AM EDT
Not listed Phase 2Phase 3 Interventional

Effect of Esomeprazole 40 mg.Daily for 7 Days on Acid Reflux and Related Arousals During Sleep in Patients With GERD

NCT01089959
View directory record Official record
Conditions
Gastroesophageal Reflux Disease
Interventions
esomeprazole
Drug
Lead sponsor
Southern Arizona VA Health Care System
Federal
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 18, 2010 · Synced Sep 24, 2026, 11:57 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Phase 4, Vedolizumab-4002 Post-marketing, Disease-Drug-Drug Interaction Study

NCT02760615
View directory record Official record
Conditions
Colitis, Ulcerative, Crohn Disease
Interventions
Caffeine, Losartan, Omeprazole, Dextromethorphan, Midazolam, Vedolizumab
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
2
States / cities
Cypress, California • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 26, 2020 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Examine the Effect of Antacid and Omeprazole on the Single-Dose Pharmacokinetics of Tebipenem Pivoxil Hydrobromide (TBPM-PI-HBr) in Healthy Adult Subjects

NCT04368585
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Tebipenem pivoxil hydrobromide (TBPM-PI-HBr), 20 mL aluminum hydroxide/magnesium hydroxide/simethicone (400 mg aluminum hydroxide/400 mg magnesium hydroxide/40 mg simethicone per 5 mL), Omeprazole
Drug
Lead sponsor
Spero Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 3, 2020 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Effects of Omeprazole on the Pharmacokinetics of XS004 (Dasatinib) Tablets in Healthy Adult Subjects Under Fasting Conditions

NCT05433896
View directory record Official record
Conditions
Pharmacokinetics, Drug Interactions
Interventions
Dasatinib ASD, Omeprazole 40 MG
Drug
Lead sponsor
Xspray Pharma AB
Industry
Eligibility
18 Years to 60 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Dilworth, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 26, 2022 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Evaluating Effect of Esomeprazole, Omeprazole or Lansoprazole on the Pharmacodynamics (PD) and Pharmacokinetics (PK) of Clopidogrel

NCT01147588
View directory record Official record
Conditions
Healthy
Interventions
lansoprazole, omeprazole, esomeprazole, clopidogrel
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 27, 2011 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 3 Interventional Results available

An Open-Label Immunogenicity and Pharmacokinetics Study of Daclizumab High Yield Process Prefilled Syringe in Relapsing Remitting Multiple Sclerosis

NCT01462318
View directory record Official record
Conditions
Relapsing-Remitting Multiple Sclerosis
Interventions
Midazolam, Caffeine, S-warfarin, Vitamin K, Omeprazole, Dextromethorphan, BIIB019 (Daclizumab)
Drug · Other · Biological
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 65 Years
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
7
States / cities
Centennial, Colorado • Washington D.C., District of Columbia • Lake Barrington, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 2 Interventional Results available

Inhibition of Gastric Acid is the Key to Satisfactory Relief of Symptoms With Esomeprazole in NUD Patients

NCT00222131
View directory record Official record
Conditions
Indigestion
Interventions
Esomeprazole, Placebo
Drug · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 55 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 24, 2026, 11:57 AM 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 24, 2026, 11:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Effect of Omeprazole on the Pharmacokinetics of SPD422 (Anagrelide Hydrochloride) in Healthy Adult Participants

NCT03866434
View directory record Official record
Conditions
Healthy Volunteers
Interventions
SPD422, Omeprazole
Drug
Lead sponsor
Shire
Industry
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 14, 2021 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 3 Interventional

Esomeprazole for Prevention of Upper Gastrointestinal Symptoms Associated With Continuous Use of NSAIDs

NCT00241514
View directory record Official record
Conditions
GERD
Interventions
Esomeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
334 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
19
States / cities
Tucson, Arizona • Anaheim, California • Orange, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2011 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 4 Interventional Results available

Pharmacokinetics of Immediate-Release vs. Delayed-Release Omeprazole in Gastroparesis

NCT00492622
View directory record Official record
Conditions
Gastroparesis, Gastroesophageal Reflux Disease
Interventions
Immediate-release omeprazole, Delayed-release omeprazole
Drug
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 27, 2017 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 3 Interventional

Esomeprazole for Relief of Upper Gastrointestinal Symptoms Associated With Continuous Use of NSAIDs

NCT00241527
View directory record Official record
Conditions
NSAIDs, Upper GI Symptoms
Interventions
Esomeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
556 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2002
U.S. locations
32
States / cities
Tallassee, Alabama • Phoenix, Arizona • Garden Grove, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2011 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Which Supraesophageal Reflux Symptoms Reliably Respond to Proton-Pump-Inhibitor (PPI) Therapy

NCT00170001
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
Nexium, Sugar Pill
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 14, 2011 · Synced Sep 24, 2026, 11:57 AM EDT
Withdrawn Phase 3 Interventional

Effect of Acid Suppression With Esomeprazole on Vocal Cord Granulomas

NCT00567658
View directory record Official record
Conditions
Larynx Disease
Interventions
Esomeprazole
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 5, 2013 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Prilosec Bioequivalence Study in Healthy Volunteers

NCT01921920
View directory record Official record
Conditions
Bioequivalence, AUC, Cmax, Pharmacokinetics
Interventions
Omeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 24, 2013 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 4 Interventional Results available

Impact of Timing on the Efficacy of Zegerid 40 mg in Healing Reflux Esophagitis: A Pilot Study

NCT00693225
View directory record Official record
Conditions
Erosive Esophagitis
Interventions
Omeprazole/sodium bicarbonate
Drug
Lead sponsor
Yvonne Romero
Other
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 19, 2012 · Synced Sep 24, 2026, 11:57 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 14, 2021 · Synced Sep 24, 2026, 11:57 AM 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 Jul 31, 2025 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

GSK1325756 Relative Bioavailability Study in Healthy Elderly Subjects

NCT03457727
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Danirixin, Omeprazole
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated May 18, 2021 · Synced Sep 24, 2026, 11:57 AM EDT
Completed Phase 3 Interventional

Esomeprazole for Prevention of Upper Gastrointestinal Symptoms Associated With Continuous Use of NSAIDs

NCT00241553
View directory record Official record
Conditions
NSAIDs, Upper GI Symptoms
Interventions
Esomeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
31
States / cities
Tallassee, Alabama • Phoenix, Arizona • Garden Grove, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2011 · Synced Sep 24, 2026, 11:57 AM EDT
Terminated Phase 1 Interventional Results available

Viokase 16, Viokase16 Plus Nexium and Nexium Alone

NCT01142128
View directory record Official record
Conditions
Chronic Pancreatitis
Interventions
Nexium (esomeprazole magnesium), Placebo to Nexium, Viokase 16 (pancrelipase) + Nexium, Viokase 16 + placebo to Nexium
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 20, 2013 · Synced Sep 24, 2026, 11:57 AM EDT