THE GREATEST GUIDE TO PROMETHAZINE CODEINE

1, 7.two) ]. Threats of Concomitant Use or Discontinuation of Cytochrome P450 2D6 Inhibitors The concomitant usage of Promethazine with Codeine Oral Resolution with all cytochrome P450 2D6 inhibitors (eg., amiodarone, quinidine) may perhaps bring about an increase in codeine plasma concentrations in addition to a lessen in active metabolite morphin