Increased plasma conc w/ P-gp inhibitors eg, ciclosporin, dronedarone, erythromycin, ketoconazole, quinidine, verapamil. Reduced plasma conc w/ P-gp inducers eg, rifampicin, phenytoin, carbamazepine, phenobarb, St. John's wort. Increased bleeding risk w/ other anticoagulants, antiplatelets, high-dose ASA, chronic NSAIDs, SSRIs/SNRIs. Increased C
max of digoxin. Decreased C
max & AUC of verapamil.