Dextromethorphan 15 mg / 5 ml (Brand Name: Benylin DM; Robitussin DM; DM; Delsym; DexAlone; Duract) Children 6 to 12 years old: 4 divided doses per day prn (Max 60 mg/day) Children 6 to 12 years old: 6 divided doses per day prn (Max 60 mg/day)