, ritonavir) or discontinuation of a cytochrome P450 3A4 inducer which include rifampin, carbamazepine, and phenytoin, may bring about an increase in codeine plasma concentrations with subsequently increased metabolism by cytochrome P450 2D6, leading to larger morphine concentrations, which could boost or extend adverse reactions and should induce likely deadly https://akorncodeine02221.mybuzzblog.com/11920793/the-akorn-promethazine-codeine-diaries