Usage of cytochrome P450 3A4 inducers, 3A4 inhibitors, or 2D6 inhibitors with Promethazine with Codeine Oral Answer needs watchful thing to consider of the results over the father or mother drug, codeine, along with the Energetic metabolite, morphine.Promethazine with Codeine Oral Answer includes promethazine, a phenothiazine. Phenothiazines are co