Codeine phosphate 10mg, promethazine HCl 6.25mg; per 5mL; syrup; contains alcohol 7%. Risk of life-threatening respiratory depression and death related to ultra-rapid metabolizers of codeine (esp.

It is about equal to codeine in depressing the cough reflex. In therapeutic dosage dextromethorphan does not inhibit ciliary activity. Promethazine is an H 1 receptor blocking agent. In addition ...