darifenacin decreases effects of codeine by influencing hepatic enzyme CYP2D6 metabolism. Use Caution/Keep an eye on. Helps prevent conversion of codeine to its Lively metabolite morphine.Composition of Cough, The Energetic substance is codeine phosphate hemihydrate. Each and every ml of oral Option is made up of 2 mg of codeine phosphate hemihydr