Maximum Strength for a Good Night's Sleep Robitussin Maximum Strength Nighttime Cough DM is a cough medicine for adults that delivers the reliable, soothing impact of its original formula in a great-tasting, fruity flavor. Developed with the taste of berry and formulated to tackle your cough symptoms, this liquid cough suppressant goes down quickly and helps you get on your way to a good night's sleep. Take 20 mL of Robitussin Cough Suppressant by mouth every six hours while symptoms persist. In addition to providing temporary relief for cough caused by colds, this nighttime cold medicine also works as an antihistamine and helps control and relieve runny noses and sneezing as well. Suited for adults and children 12 years and over, keep Robitussin near your bedside for when nighttime cold symptoms strike. This night time cough syrup is specially formulated to control the impulse to cough as you sleep, allowing you to get a good's night rest and put you on the path to recovery. Delivering cough relief for more than 70 years, Robitussin has the product you need to treat your specific cough, cold, sore throat or flu symptoms for day and night relief. Robitussin shuts coughs down.