Caution should be used when administering peginterferon alfa-2b with medicines metabolised by CYP2D6 and CYP2C8/9, especially those with narrow therapeutic window, such as warfarin and phenytoin (CYP2C9) and flecainide (CYP2D6).
60 лекарства с малка терапевтична ширина като например варфарин и фенитоин (CYP2C9) или флекаинид (CYP2D6).