Blockage of the Gut. Some people having promethazine/phenylephrine/codeine could produce severe constipation or possibly a blockage with the intestine (bowel obstruction).There might be other Negative effects of promethazine/phenylephrine/codeine that are not shown in this article. Contact your Health care company if you're thinking that you will b

. Cytochrome P450 2D6 is the foremost enzyme accountable for the transformation of codeine to morphine and P450 3A4 is the main enzyme mediating the conversion of codeine to norcodeineBreastfeeding. Tend not to just take promethazine/phenylephrine/codeine if you are breastfeeding. Promethazine/phenylephrine/codeine can move into breast milk. Inform