Omeprazole: all 218 studies that test it

Page 1 of 3. Open to participants first (16), then studies with results posted, then the rest; newest registration first within each.

• A Phase I Study of the Interaction of D-2570 With Other Drugs in Healthy AdultsNot yet recruitingNCT07875842Phase 1
• A Study to Investigate the Effect of Omeprazole and Cyclosporine on Velzatinib in Healthy ParticipantsNot yet recruitingNCT07862114Phase 1
• Effect of Omeprazole on Gut Microbiota in Adults With Obesity and GERDNot yet recruitingNCT07850960Phase 4
• Comparison of Omeprazole vs Vonoprazon in Treatment of H Pylori InfectionNot yet recruitingNCT07040839Phase 4
• Efficacy of Ketorolac for Postoperative Pain Management in Hip ArthroscopyRecruitingNCT07037888Phase 4
• Immunochemotherapy ± Salvage Chemoradiation for Local Recurrence of Esophageal Squamous Cell Carcinoma After Definitive ChemoradiotherapyEnrolling by invitationNCT07016737Phase 3
• PPIs and In-Hospital Morbidity in Acute Variceal Bleeding With Chronic Liver DiseaseRecruitingNCT06861478Phase 2
• Evaluating the Pharmacokinetics of Oregano and Potential Oregano-drug Interactions Using a Drug Cocktail ApproachRecruitingNCT06693960Early Phase 1
• Study on the Effect of Atorvastatin Co-administered With Omeprazole on Statin LactoneRecruitingNCT06690164Phase 4
• Luminal Fructose Kinetics (MARTINI Study)RecruitingNCT06539494Phase 2
• Reducing Gastrointestinal Bleeding With Proton Pump Inhibitor Therapy in Acute Venous ThromboembolismRecruitingNCT06393868Phase 3
• Treatment of Gastroesophageal Reflux Disease in InfantsRecruitingNCT06255886Phase 4
• GERD Infant Feeding Therapeutics Trial (GIFT Trial)RecruitingNCT06114836Not applicable
• OPEN Versus InTact Capsule Proton Pump Inhibitors for the Treatment of Marginal UlcersRecruitingNCT05799105Phase 4
• High Dose Oral Omeprazole in High Risk UGIBRecruitingNCT04394663Not applicable
• Fatty Acid Synthase Inhibition in Castration Refractory Prostate CancerRecruitingNCT04337580Phase 2
• A Study in Healthy Men to Test Whether Zongertinib Affects How 3 Other Medicines (Midazolam, Omeprazole, and Repaglinide) Are Taken up and Processed by the BodyCompletedNCT06494761Phase 1Results posted
• A Study to Compare How Different Substances (Caffeine, Warfarin, Omeprazole, Metoprolol, and Midazolam) Are Handled by the Body of Healthy People and People With Liver CirrhosisCompletedNCT05741385Not applicableResults posted
• A Study to Evaluate the Impact of Omeprazole on the Pharmacokinetics of Sotorasib Co-administered With an Acidic Beverage in Healthy VolunteersCompletedNCT05497557Phase 1Results posted
• A Study of ALXN1840 (Coated and Non-coated) Administered With And Without Omeprazole In Healthy AdultsCompletedNCT05319912Phase 1Results posted
• A Study of ALXN1840 (Non-coated) Administered With And Without Omeprazole In Healthy AdultsCompletedNCT05319899Phase 1Results posted
• Study of the Effect of Food and a Proton Pump Inhibitor (PPI; Omeprazole) on LOXO-305 in Healthy ParticipantsCompletedNCT05134350Phase 1Results posted
• A Study of LY3484356 in Healthy Female ParticipantsCompletedNCT04840888Phase 1Results posted
• PROUD Study - Preventing Opioid Use DisordersTerminatedNCT04766996Phase 4Results posted
• A Study in Healthy People to Test Whether BI 730357 Influences the Amount of Caffeine, Warfarin, Omeprazole, and Midazolam in the BloodCompletedNCT04679948Phase 1Results posted
• Evaluation of Pharmacokinetic Interaction Between GSK3640254 and Caffeine, Metoprolol, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, and Pravastatin in Healthy AdultsCompletedNCT04425902Phase 1Results posted
• Interaction Between Omeprazole and Gliclazide in CYP2C19 Normal/ Ultrarapid MetabolisersCompletedNCT04198948Phase 1Results posted
• Study to Evaluate the Effect of Omeprazole on the Pharmacokinetics of SPD422 (Anagrelide Hydrochloride) in Healthy Adult ParticipantsCompletedNCT03866434Phase 1Results posted
• Proton Pump Inhibitors (PPI) and Fat Absorption in Cystic Fibrosis (CF) and Exocrine Pancreatic Insufficiency (EPI)CompletedNCT03551691Phase 2Results posted
• Effect of a Proton Pump Inhibitor on the PK of TepotinibCompletedNCT03531762Phase 1Results posted
• Drug-drug Interaction Between Belumosudil, Itraconazole, Rifampicin, Rabeprazole, and Omeprazole in Healthy VolunteersCompletedNCT03530995Phase 1Results posted
• Gastric Acid Suppression and Probiotic ColonizationCompletedNCT03327051Phase 4Results posted
• Pre-operative IRX-2 in Early Stage Breast Cancer (ESBC)CompletedNCT02950259Phase 1Results posted
• Implementation of PPI Medication PGX TestingCompletedNCT02794844Phase 4Results posted
• Interaction of BI 425809 With Midazolam, Warfarin, Omeprazole and DigoxinCompletedNCT02783040Phase 1Results posted
• A Study of Abemaciclib in Participants With Cancer That is Advanced or Has Spread to Another Part(s) of the BodyCompletedNCT02688088Phase 1Results posted
• Role of Pepsin Assay in Wheezy InfantsCompletedNCT02685436Phase 4Results posted
• Symptom Control Satisfaction With Proton Pump Inhibitor RegimenCompletedNCT02623816Phase 4Results posted
• Inhibiting Fatty Acid Synthase to Improve Efficacy of Neoadjuvant ChemotherapyCompletedNCT02595372Phase 2Results posted
• A Study to Evaluate the Effect of Increased Stomach pH on Evacetrapib in Healthy ParticipantsCompletedNCT02365558Phase 1Results posted
• Effect of Acid Suppression Medication on Pediatric MicrobiomeTerminatedNCT02016820Not applicableResults posted
• Effect of Food and Increased Gastric pH Value on Bioavailability of a Single Dose of BI 207127 in Healthy Caucasian and Japanese SubjectsTerminatedNCT01983566Phase 1Results posted
• A Study of Baricitinib and Omeprazole in Healthy ParticipantsCompletedNCT01925144Phase 1Results posted
• Effects of Gastric Acid on Colonic MicrobiomeCompletedNCT01901276Phase 4Results posted
• Ranitidin Versus Omeprazole in Patients Taking ClopidogrelCompletedNCT01896557Phase 4Results posted
• Compliance With Antidepressant Medication in Treatment of Functional DyspepsiaCompletedNCT01851863Phase 4Results posted
• Anti-reflux Control to Decrease Post Tonsillectomy PainTerminatedNCT01777854Phase 4Results posted
• Study to Evaluate Effect of Belatacept on Pharmacokinetics of Inje Cocktail in Healthy VolunteersCompletedNCT01766050Phase 4Results posted
• Comparison of Two Omeprazole-Containing Products for Relief of Frequent Heartburn (MK-0764A-036)CompletedNCT01587885Phase 4Results posted
• Proton Pump Inhibitors and Dysbiosis in CirrhosisCompletedNCT01458990Not applicableResults posted
• SSP-002358 Drug Interaction Study With OmeprazoleCompletedNCT01415349Phase 1Results posted
• Clopidogrel Pharmacogenetics (PGX) Bench to BedsideCompletedNCT01341600Not applicableResults posted
• Gastric pH and Anthocyanin AbsorptionCompletedNCT01122160Not applicableResults posted
• Does Intensive Acid Suppression Reduce Esophageal Inflammation and Recurrent Barrett's Esophagus Following Ablation?CompletedNCT01093755Phase 4Results posted
• Pharmacological Study That Measures Omeprazole Effect on Aspirins Absorption in Healthy VolunteersCompletedNCT01061034Not applicableResults posted
• A Pharmacokinetic Study of RO5185426 in Combination With a Drug Cocktail in Patients With Metastatic MelanomaCompletedNCT01001299Phase 1Results posted
• A Study to Evaluate the Effect of Famotidine and Omeprazole on MK0518 (Raltegravir) Pharmacokinetics in Human Immunodeficiency Virus (HIV)-Infected Patients (0518-054)CompletedNCT01000818Phase 1Results posted
• A Study of the Effects of Multiple Doses of Dexlansoprazole, Lansoprazole, Omeprazole or Esomeprazole on the Pharmacokinetics and Pharmacodynamics of Clopidogrel in Healthy Participants.CompletedNCT00942175Phase 1Results posted
• Comparison of Prilosec Over-the-counter (OTC)® Versus Prevacid® for Gastric Acid SuppressionCompletedNCT00903448Phase 4Results posted
• 13-C Urea Breath Test Using BreathID System and PPIs (Proton Pump Inhibitors)CompletedNCT00825630Phase 4Results posted
• Comparison of Prilosec OTC® Versus Zegerid® for Gastric Acid SuppressionCompletedNCT00808769Phase 4Results posted
• A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (Study CL2008-02)(P07814)(COMPLETED)CompletedNCT00765206Phase 3Results posted
• Impact of Timing on the Efficacy of Zegerid 40 mg in Healing Reflux Esophagitis: A Pilot StudyCompletedNCT00693225Phase 4Results posted
• A Pharmacodynamic Study Comparing Zegerid® and Prilosec OTC® (CL2007-17 )(P07813)(COMPLETED)CompletedNCT00674115Phase 3Results posted
• Bronchial Hyper-responsiveness in Reflux CoughTerminatedNCT00668317Phase 3Results posted
• The Effect of Omeprazole on the Pharmacokinetics of Dasatinib in Healthy SubjectsCompletedNCT00655746Phase 1Results posted
• Reflux Esophagitis Phase III Study (Maintenance Treatment)CompletedNCT00634114Phase 3Results posted
• Does Omeprazole Decrease Intestinal Calcium Absorption?CompletedNCT00582972Phase 4Results posted
• Ulcer Prevention Study in Post Gastric Bypass PatientsCompletedNCT00557349Phase 4Results posted
• Drug-drug Interaction Study of Vorasidenib With Bupropion, Repaglinide, Flurbiprofen, Omeprazole, Midazolam, and Rosuvastatin in Healthy Adult ParticipantsCompletedNCT07235748Phase 1
• Effects of Omeprazole Ingestion on Postprandial Amino Acid Concentrations in Response to a Mixed MealCompletedNCT07142486Not applicable
• Drug-drug Interaction Study of Omeprazole and Bemnifosbuvir/RuzasvirCompletedNCT07007806Phase 1
• A Study to Investigate the Relative Bioavailability of 2 Different Formulations of AZD4144, the Effect of Food and Omeprazole on the Pharmacokinetics of AZD4144 in Healthy ParticipantsCompletedNCT06948006Phase 1
• A Study to Assess the Safety, Tolerability and Pharmacokinetics (PK) of Xanomeline With Trospium Chloride Versus KarXT in Healthy Adult and Elderly Participants of Japanese Ethnicity and to Assess the Effect of Omeprazole on the PK of Xanomeline With Trospium Chloride in Healthy Adult ParticipantsCompletedNCT06605950Phase 1
• A Trial of Omeprazole and Low Dose Aspirin to Identify Colorectal Biomarkers of Preventive EfficacyCompletedNCT06378398Early Phase 1
• A Clinical Trial to Evaluate a High-Fat Meal and Omeprazole Enteric-coated Tablets on ASBK021CompletedNCT06322706Phase 1
• Safety and Efficacy of Triple and Quadruple Regimens as First Line Therapy for Management of Helicobacter Pylori Infection in EgyptiansCompletedNCT06315478Phase 4
• Drug-durg Interaction of Leritrelvir(RAY1216) With Midazolam, Omeprazole, Rosuvastatin, Verapamil, and RifampinCompletedNCT06031454Phase 1
• A Study to Assess the Effect of BMS-986419 on the Single Dose Drug Levels of Probe Substrates in Healthy ParticipantsCompletedNCT05932277Phase 1
• Bioequivalence Study of 20 mg Omeprazole Capsules in Indonesia Healthy SubjectCompletedNCT05849883Not applicable
• The Possible Protective Role of Omeprazole Against Oxaliplatin Induced Neuropathy in Cancer PatientsCompletedNCT05680870Phase 3
• Assessment of the Effect of Omeprazole on Vicagrel in Healthy SubjectsStatus unknownNCT05651074Phase 1
• Evaluation of the Effects of Omeprazole and Rifampin on the Pharmacokinetics of VX-548 in Healthy ParticipantsCompletedNCT05635110Phase 1
• Study to Evaluate the Drug-drug Interaction Effect of Omeprazole on the Pharmacokinetics (PK) of AMG 510 in Healthy ParticipantsCompletedNCT05581992Phase 1
• Study to Assess the Effect of Co-Administration of AZD9833 on the Pharmacokinetics of Midazolam, of Omeprazole, of Celecoxib and of Dabigatran Etexilate in Healthy Postmenopausal Female VolunteersCompletedNCT05438303Phase 1
• Biomarkers for Prediction of Analgesic Efficacy in Knee OA.CompletedNCT05256342Not applicable
• A Study to Investigate the Effect of Single and Repeated Oral Doses of ACT-539313 on What the Body Does to Flurbiprofen, Omeprazole, Midazolam in Healthy SubjectsCompletedNCT05254548Phase 1
• A Study of the Drug Interactions Between Danicopan and Cyclosporine, Tacrolimus, Antacids, and Omeprazole in Healthy AdultsCompletedNCT05109390Phase 1
• A Study to Assess the Effects of Itraconazole, Rifampicin, and Omeprazole on Pharmacokinetics of AdavosertibTerminatedNCT04959266Phase 1
• High Dose Omeprazole in Patients With Pancreatic CancerTerminatedNCT04930991Early Phase 1
• A Study to Evaluate the One-way Interaction of Calcium Carbonate, Omeprazole, or Rifampin on ACP-196CompletedNCT04914936Phase 1
• A Study to Evaluate the Effect of an Acidic Formulation of Acalabrutinib (ACP-196), Acidic Beverage, or Grapefruit Juice on the Pharmacokinetics (PK) of ACP-196 Alone and Coadministered With OmeprazoleCompletedNCT04876807Phase 1
• Comparison of Efficacy of Triple Regimen Based on Clarithromycin VS Metronidazole in ChildrenStatus unknownNCT04721704Not applicable
• The DDI Study Had Been Designed to Investigate the Effect of SHR3680 on the Pharmacokinetics of Midazolam, S-Warfarin and OmeprazoleCompletedNCT04676035Phase 1
• Comparing Different Regimens for Eradication of Helicobacter Pylori in KuwaitCompletedNCT04617613Phase 4
• Assessment and Management of Chronic Dyspepsia in Eastern UgandaCompletedNCT04525664Early Phase 1
• Study to Examine the Effect of Antacid and Omeprazole on the Single-Dose Pharmacokinetics of Tebipenem Pivoxil Hydrobromide (TBPM-PI-HBr) in Healthy Adult SubjectsCompletedNCT04368585Phase 1
• Preventing Cardiac Complication of COVID-19 Disease With Early Acute Coronary Syndrome Therapy: A Randomised Controlled Trial.TerminatedNCT04333407Not applicable
• Assessment of Gastric pH Changes Induced by Ascorbic Acid TabletsCompletedNCT04199624Phase 1
• Oral Omeprazole in Bleeding Peptic UlcerStatus unknownNCT04170270Early Phase 1

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