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Showing 1–24 of 314 matching trials from the live ClinicalTrials.gov search.
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Terminated Phase 4 Interventional

Metformin and Esomeprazole in Preterm Pre-eclampsia

NCT06359015
View directory record Official record
Conditions
Preeclampsia Severe, Pre-Eclampsia, Preeclampsia, Preeclampsia Second Trimester, Preeclampsia Complicating Childbirth, Preeclampsia Puerperium, Preterm
Interventions
Metformin, Esomeprazole
Drug
Lead sponsor
Christiana Care Health Services
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Sep 1, 2026, 9:59 AM 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 1, 2026, 9:59 AM EDT
Completed Phase 4 Interventional Results available

The CALIBER Study Randomized Controlled Trial of LINX Versus Double-Dose Proton Pump Inhibitor Therapy for Reflux Disease

NCT02505945
View directory record Official record
Conditions
GERD Gastroesophageal Reflux Disease
Interventions
Omeprazole, LINX Reflux Management System
Drug · Device
Lead sponsor
Torax Medical Incorporated
Industry
Eligibility
21 Years and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
21
States / cities
Mobile, Alabama • Heber Springs, Arkansas • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2019 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 4 Interventional

An Open Label pH Comparison of Esomeprazole and Lansoprazole in Barrett's Esophagus Patients

NCT00352261
View directory record Official record
Conditions
Barrett's Esophagus
Interventions
Esomeprazole, Lansoprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 70 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
12
States / cities
Phoenix, Arizona • Tucson, Arizona • North Chicago, Illinois + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2009 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacodynamics of CGT 2168 Compared With Plavix®

NCT00620802
View directory record Official record
Conditions
Healthy
Interventions
CGT-2168, Plavix
Drug
Lead sponsor
Cogentus Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 25, 2008 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug-drug Interaction Study of Aggrenox and Omeprazole in Normal Volunteers

NCT01303445
View directory record Official record
Conditions
Healthy
Interventions
Aggrenox alone, Aggrenox and omeprazole, Omeprazole alone
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2011
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 23, 2013 · Synced Sep 1, 2026, 9:59 AM 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 1, 2026, 9:59 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Anti-reflux Control to Decrease Post Tonsillectomy Pain

NCT01777854
View directory record Official record
Conditions
Laryngopharyngeal Reflux, Throat Pain
Interventions
Omeprazole
Drug
Lead sponsor
Ascension Health
Industry
Eligibility
7 Years to 17 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Grand Blanc, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 23, 2018 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional

Pharmacokinetic Study to Evaluate the Effect of a Single Dose of Guselkumab (CNTO 1959) on CYP 450 Enzyme Activities After Subcutaneous Administration in Participants With Psoriasis

NCT02397382
View directory record Official record
Conditions
Psoriasis
Interventions
Guselkumab, Midazolam, Warfarin, Omeprazole, Dextromethorphan, Caffeine
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
8
States / cities
Anniston, Alabama • North Hollywood, California • Orlando, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2017 · Synced Sep 1, 2026, 9:59 AM 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 1, 2026, 9:59 AM EDT
Withdrawn Phase 2 Interventional

A Phase II Trial of Proton Pump Inhibitors With Chemotherapy in Patients With Metastatic Head and Neck Cancer

NCT02013453
View directory record Official record
Conditions
Cancer of Head and Neck
Interventions
Omeprazole, Carboplatin, 5FU, Paclitaxel, Pemetrexed
Drug
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 3 Interventional

Safety of Daily Dose Esomeprazole for GERD for Pediatric and Adolescent Patients

NCT00241501
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD)
Interventions
Esomeprazole (Nexium)
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years to 17 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
28
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Wilmington, Delaware + 25 more
Source: ClinicalTrials.gov public record
Updated Nov 18, 2010 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 4 Interventional

An Open-label, Exploratory Trial to Assess Gastric Acid Control in Critically Ill Subjects Receiving Nexium

NCT00428701
View directory record Official record
Conditions
Gastric Ulcer
Interventions
Esomeprazole Sodium
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
5
States / cities
Newark, Delaware • Shreveport, Louisiana • Hershey, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2011 · Synced Sep 1, 2026, 9:59 AM 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 1, 2026, 9:59 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 1, 2026, 9:59 AM EDT
Completed Phase 4 Interventional Results available

Does Intensive Acid Suppression Reduce Esophageal Inflammation and Recurrent Barrett's Esophagus Following Ablation?

NCT01093755
View directory record Official record
Conditions
Inflammation, Barrett's Esophagus
Interventions
dexlansoprazole, Omeprazole
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 16, 2016 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Voxelotor CYP and Transporter Cocktail Interaction Study

NCT05981365
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Voxelotor, Bupropion, Repaglinide, Flurbiprofen, Omeprazole, Midazolam, Metformin, Furosemide, Rosuvastatin
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Nov 21, 2024 · Synced Sep 1, 2026, 9:59 AM EDT
Completed Phase 1Phase 2 Interventional

Deprescribing Proton Pump Inhibitors to Reduce Post-TIPS Hepatic Encephalopathy

NCT05070351
View directory record Official record
Conditions
Hepatic Encephalopathy
Interventions
PPI deprescribing
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Sep 1, 2026, 9:59 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

H. Pylori Eradication Using Pyklear in Adults in El Paso, Texas: a Pilot Study

NCT01335334
View directory record Official record
Conditions
H. Pylori Infection
Interventions
bismuth subcitrate potassium, metronidazole,tetracycline hydrochloride and omeprazole
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Apr 13, 2011 · Synced Sep 1, 2026, 9:59 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 1, 2026, 9:59 AM 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 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study on Effects of BMS-955176 on the Pharmacokinetics of Probe Substrates

NCT02578277
View directory record Official record
Conditions
HIV Infections
Interventions
CYP and transporter probe substrates, BMS-955176, BMS-955176 plus CYP and transporter probe substrates
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 50 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 12, 2018 · Synced Sep 1, 2026, 9:59 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 1, 2026, 9:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Vecam 40/300 and Vecam 20/300 Compared to Omeprazole 20 mg on Gastric pH

NCT00818870
View directory record Official record
Conditions
Gastroesophageal Reflux
Interventions
Omeprazole, Vecam
Drug
Lead sponsor
Vecta Ltd.
Industry
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 26, 2010 · Synced Sep 1, 2026, 9:59 AM EDT