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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Recruiting Phase 3 Interventional

A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast Cancer Post CDK4/6i and Endocrine Combination Therapy

NCT05646862
View directory record Official record
Conditions
Breast Cancer
Interventions
Inavolisib, Fulvestrant, Alpelisib, Bupropion, Omeprazole, Midazolam
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
39
States / cities
Greenbrae, California • Los Alamitos, California • Los Angeles, California + 32 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Plasm Gastrin Concentrations in Response to Nexium Administration in Healthy Volunteers

NCT01135472
View directory record Official record
Conditions
Healthy
Interventions
Esomeprazole Magnesium
Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2012 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of a Proton Pump Inhibitor on Gleevec® in Healthy Volunteers

NCT00446004
View directory record Official record
Conditions
Healthy
Interventions
Imatinib Mesylate, Omeprazole
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 21, 2016 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase I Study To Estimate The Effect Of Ketoconazole And Omeprazole On The Pharmacokinetics Of Dimebon In Healthy Subjects Who Are Normal Or Poor CYP2D6 Metabolizers

NCT00931073
View directory record Official record
Conditions
Alzheimer's Disease, Huntington's Disease
Interventions
Dimebon alone, Dimebon + Ketoconazole, Dimebon + Omeprazole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 17, 2009 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional

Gamma-Secretase/Notch Signalling Pathway Inhibitor RO4929097 in Treating Patients With Advanced Solid Tumors

NCT01218620
View directory record Official record
Conditions
Adult Solid Neoplasm
Interventions
Gamma-Secretase Inhibitor RO4929097, Ketoconazole, Rifampin, Midazolam Hydrochloride, Omeprazole, Tolbutamide, Dextromethorphan Hydrobromide, Pharmacological Study, Laboratory Biomarker Analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 22, 2014 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug Interaction With Proton Pump Inhibitors for Nifedipine ER Tablets

NCT03100838
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Nifedipine 60 MG Extended Release Oral Tablet, omeprazole/sodium bicarbonate, SmartPill (TM)
Drug · Device
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 4 Interventional Results available

Ulcer Prevention Study in Post Gastric Bypass Patients

NCT00557349
View directory record Official record
Conditions
Marginal Ulcers
Interventions
Omeprazole, Famotidine
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Assess the Drug Interactions of BBT-877 and Midazolam, Itraconazole, and Esomeprazole in Healthy Adult Subjects

NCT04138836
View directory record Official record
Conditions
Healthy Participants
Interventions
BBT-877, Midazolam, Itraconazole, Esomeprazole
Drug
Lead sponsor
Bridge Biotherapeutics, Inc.
Industry
Eligibility
19 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Interaction Study of Clopidogrel 300/75 mg Given Alone or Concomitantly With Omeprazole 80 mg in Healthy Subjects

NCT01129375
View directory record Official record
Conditions
Healthy
Interventions
clopidogrel, placebo, omeprazole
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 14, 2011 · Synced Sep 22, 2026, 10:50 PM 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 1, 2023 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 2 Interventional

The Safety and Efficacy of Dexloxiglumide for the Relief of Symptoms of Functional Dyspepsia.

NCT00303264
View directory record Official record
Conditions
Dyspepsia
Interventions
dexloxiglumide, Nexium (esomeprazole)
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 75 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 4, 2012 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Symptom Control Satisfaction With Proton Pump Inhibitor Regimen

NCT02623816
View directory record Official record
Conditions
Heartburn
Interventions
Optimal Dosing of Omeprazole
Drug
Lead sponsor
MetroHealth Medical Center
Other
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 24, 2022 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate the Incidence of Gastric Ulcers Following Administration of Either PA32540 or Enteric Coated Aspirin 325 mg in Subjects Who Are at Risk for Developing Aspirin-Associated Ulcers

NCT00960869
View directory record Official record
Conditions
Gastric Ulcer
Interventions
PA32540, EC-Aspirin 325 mg
Drug
Lead sponsor
POZEN
Industry
Eligibility
55 Years and older
Enrollment
519 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 16, 2016 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 4 Interventional Results available

Placebo In Chronic Back Pain - Double-Blind Randomized Control Trial

NCT02013427
View directory record Official record
Conditions
Chronic Low Back Pain
Interventions
Naproxen, Placebo, Omeprazole
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study of GBT440 With Caffeine, S-warfarin, Omeprazole, and Midazolam in Healthy Subjects

NCT02567682
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
GBT440
Drug
Lead sponsor
Global Blood Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Concomitant Administration of BMS-986195 on Methotrexate, Caffeine, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, and Pravastatin

NCT03131973
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
BMS-986195, Methotrexate, Leucovorin, Caffeine, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, Pravastatin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2017 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Learn About How Food and Esomeprazole Affect the Level of BAY2927088 in the Blood When Taken Together in Healthy Participants

NCT06378658
View directory record Official record
Conditions
Advanced Non-small Cell Lung Cancer, EGFR Mutation, HER2 Mutation, Healthy Volunteers
Interventions
BAY2927088, Esomeprazole, Food
Drug · Other
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2024 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Open-Label, Multiple-Dose, Non-Randomized Study to Assess Drug-Drug Interactions of Proellex® in Female Subjects

NCT00741468
View directory record Official record
Conditions
Drug Interactions
Interventions
Proellex, CYP1A2 probe, CYP2C9 probe, CYP2C19 probe, CYP2D6 probe, CYP3A4 probe
Drug
Lead sponsor
Repros Therapeutics Inc.
Industry
Eligibility
18 Years to 48 Years · Female only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 21, 2014 · Synced Sep 22, 2026, 10:50 PM EDT
Terminated Phase 3 Interventional

Clopidogrel and the Optimization of Gastrointestinal Events (COGENT-1)

NCT00557921
View directory record Official record
Conditions
Acute Coronary Syndrome, Myocardial Infarction, Coronary Artery Disease, Percutaneous Coronary Intervention
Interventions
CGT-2168 (clopidogrel 75 mg/omeprazole 20 mg) and aspirin, Plavix (clopidogrel 75 mg) and aspirin
Drug
Lead sponsor
Cogentus Pharmaceuticals
Industry
Eligibility
21 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
247
States / cities
Alexander City, Alabama • Birmingham, Alabama • Geneva, Alabama + 205 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2009 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Study to Examine the Pharmacodynamics of Different AZD1722 Formulations

NCT02249936
View directory record Official record
Conditions
Healthy
Interventions
AZD1722, Omeprazole
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
19 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 25, 2014 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Pharmacokinetic Study to Assess Drug-drug Interaction Between Zanubrutinib and a Cocktail of Substrates in Healthy Subjects

NCT03561298
View directory record Official record
Conditions
Healthy Subjects
Interventions
BGB-3111 and Drug Cocktail
Drug
Lead sponsor
BeiGene
Industry
Eligibility
18 Years to 60 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Nov 3, 2019 · Synced Sep 22, 2026, 10:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic and Safety Study of Cenicriviroc and Acid Reducing Agents When Dosed Alone or in Combination

NCT02684799
View directory record Official record
Conditions
Healthy
Interventions
Cenicriviroc, Omeprazole, Famotidine
Drug
Lead sponsor
Tobira Therapeutics, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced Sep 22, 2026, 10:50 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 22, 2026, 10:50 PM EDT
Completed Phase 3 Interventional

Safety & Efficacy of Omeprazole Sodium Bicarbonate for the Prevention of Upper GI Bleeding in the Critically Ill

NCT00045799
View directory record Official record
Conditions
Upper Gastrointestinal Bleeding
Interventions
Omeprazole sodium bicarbonate immediate release PWD/FS, Cimetidine IV
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
16 Years and older
Enrollment
354 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
58
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 49 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 22, 2026, 10:50 PM EDT