, ritonavir) or discontinuation of a cytochrome P450 3A4 inducer which include rifampin, carbamazepine, and phenytoin, could end in an increase in codeine plasma concentrations with subsequently increased metabolism by cytochrome P450 2D6, causing increased morphine ranges, which could maximize or lengthen adverse reactions and will trigger likely deadly respiratory https://andredfdaw.bloggazzo.com/31472616/not-known-factual-statements-about-akorn-promethazine-codeine