For temporary cough relief and to help loosen phlegm from your bronchial passageways, turn to DayQuil Mucus Control DM. Temporarily relieves cough associated with the common coldHelps loosen phlegm and thin bronchial secretions to rid the bronchial passageways of bothersome mucusActive Ingredient (in each 15 ml tablespoon): Dextromethorphan HBr 10 mg (Cough suppressant), Guaifenesin 200 mg (Expectorant)Inactive