CONTEXT: Prior mechanistic studies reported that omeprazole decreases the platelet inhibitory effects of clopidogrel, yet the clinical significance of these findings is not clear. OBJECTIVE: To assess outcomes of patients taking clopidogrel with or without a proton pump inhibitor (PPI) after hospitalization for acute coronary syndrome (ACS). DESIGN, SETTING, AND PATIENTS: Retrospective cohort study of… Read more »