Usage of cytochrome P450 3A4 inducers, 3A4 inhibitors, or 2D6 inhibitors with Promethazine with Codeine Oral Remedy demands thorough thought of the consequences to the mother or father drug, codeine, as well as Energetic metabolite, morphine.Promethazine with Codeine Oral Alternative contains promethazine, a phenothiazine. Phenothiazines are involv