No promethazine in Nyquil.
D000082:Acetaminophen / Q000032:analysis*; D003915:Dextromethorphan / Q000032:analysis*; D004319:Doxylamine / Q000032:analysis*; D004338:Drug Combinations / Q000032:analysis; D004809:Ephedrine / Q000032:analysis*; D007981:Levorphanol / Q000031:analogs & derivatives*; D004366:Nonprescription Drugs / Q000032:analysis*; D011398:Promethazine / Q000032:analysis*; D054199:Pseudoephedrine; D011725:Pyridines / Q000032:analysis*
D004338:Drug Combinations; D004366:Nonprescription Drugs; C045626:Nyquil; D011725:Pyridines; D007981:Levorphanol; D000082:Acetaminophen; D003915:Dextromethorphan; D054199:Pseudoephedrine; D004319:Doxylamine; D011398:Promethazine; D004809:Ephedrine