, ritonavir) or discontinuation of a cytochrome P450 3A4 inducer like rifampin, carbamazepine, and phenytoin, may well end in a rise in codeine plasma concentrations with subsequently better metabolism by cytochrome P450 2D6, leading to better morphine levels, which could improve or lengthen adverse reactions and may trigger perhaps fatal https://beaudfebz.vidublog.com/31405473/akorn-promethazine-codeine-things-to-know-before-you-buy