Increased levels/effects of aripiprazole, busulfan, dasatinib, imatinib, lomitapide, pimozide, prilocaine, sorafenib, vit K antagonists. Decreased level/effects w/ anticonvulsants (hydantoin), barbiturates, carbamazepine, cholestyramine resin, peginterferon α-2b. Increased risk of paracetamol-induced hepatotoxicity w/ ethanol. 120 mg/5 mL: Increased levels/effects w/ dasatinib, imatinib, INH, metyrapone, probenecid, sorafenib. Decreased rate of absorption w/ food. Decreased levels w/ St. John's wort.