, ritonavir) or discontinuation of the cytochrome P450 3A4 inducer including rifampin, carbamazepine, and phenytoin, could bring about a rise in codeine plasma concentrations with subsequently larger metabolism by cytochrome P450 2D6, leading to better morphine concentrations, which could increase or prolong adverse reactions and could cause probably fatal respiratory https://reidhihea.total-blog.com/fascination-about-akorn-promethazine-codeine-57554051