Utilization of cytochrome P450 3A4 inducers, 3A4 inhibitors, or 2D6 inhibitors with Promethazine with Codeine Oral Resolution demands very careful thought of the results around the guardian drug, codeine, along with the active metabolite, morphine.Promethazine with Codeine Oral Remedy includes promethazine, a phenothiazine. Phenothiazines are invol… Read More