A REVIEW OF XANAX 2MG

celecoxib decreases effects of codeine by affecting hepatic enzyme CYP2D6 metabolism. Use Caution/Watch. Helps prevent conversion of codeine to its active metabolite morphine.clozapine decreases effects of codeine by influencing hepatic enzyme CYP2D6 metabolism. Use Warning/Check. Stops conversion of codeine to its Energetic metabolite morphine.FDA