May affect exposure w/ CYP2C19 & CYP3A4 inhibitors or inducers. May alter metabolism of some drugs metabolised by CYP2C19 & CYP3A4 isoenzymes. May prolong the elimination of diazepam, phenytoin, & warfarin. Reduce the absorption of drugs eg, dasatinib, ketoconazole & itraconazole. Increased plasma conc of both drugs w/ voriconazole. Reduce exposure of atazanavir.