Robitussin Maximum Strength Cough + Chest Congestion DM is a non-drowsy cough medicine not only works to control your cough, but it also thins and loosens mucus to help make your coughs more productive. The strong, soothing action of max-strength Robitussin Cough Syrup comes in a great raspberry flavor ? also available in liquid-filled capsules. For adults and children ages 12 and over, Robitussin Maximum Strength Cough + Chest Congestion DM should be taken in 20 mL doses every four hours; do not take more than six doses in any 24-hour period. For nighttime cough relief, try Robitussin Maximum Strength Nighttime Cough DM.