DailyMed will deliver notification of updates and additions to Drug Label data now shown on this site by way of its RSS feed. chlorpromazine will lower the extent or result of codeine by affecting hepatic enzyme CYP2D6 metabolism. Use Warning/Keep track of. Helps prevent conversion of codeine to its Energetic https://wockusa.com/product/wockhardt-promethazine-with-codeine-oral-solution/