Possibility of reduced dissolution & absorption w/ medicines or disease conditions that increase gastric emptying & gut motility. Increased plasma conc w/ ciclosporin, dronedarone, erythromycin, ketoconazole, quinidine, or verapamil. Decreased mean AUC & shortened t
½ w/ rifampicin. Reduced plasma conc w/ phenytoin, carbamazepine, phenobarb or St. John's wort. Increased risk of bleeding w/ anticoagulants, antiplatelets, NSAIDs & SSRIs/serotonin norepinephrine reuptake inhibitors; acetylsalicylic acid; platelet inhibitors. Decreased C
max & AUC of verapamil. Increased C
max of digoxin.