The akorn promethazine codeine Diaries
, ritonavir) or discontinuation of the cytochrome P450 3A4 inducer for example rifampin, carbamazepine, and phenytoin, could end in a rise in codeine plasma concentrations with subsequently bigger metabolism by cytochrome P450 2D6, causing greater morphine amounts, which could boost or prolong adverse reactions and should lead to most likely deadly