, ritonavir) or discontinuation of a cytochrome P450 3A4 inducer including rifampin, carbamazepine, and phenytoin, may end in an increase in codeine plasma concentrations with subsequently increased metabolism by cytochrome P450 2D6, causing larger morphine levels, which could increase or extend adverse reactions and could lead to possibly deadly respiratory https://elliotvobxb.dailyblogzz.com/32803691/the-best-side-of-akorn-codeine