Robitussin Extra Strength Chest Congestion is specially formulated to relieve chest congestion and loosen mucus and phlegm while soothing sore throats for up to 6 to 8 hours. Just one dose provides continuous cough relief throughout the day or night.
Guaifenesin (200 mg / 5 ml).
Adults and children over the age of 12: take two teaspoons every six to eight hours, or as directed by a physician. Children under 12: Do not use. Maximum 4 doses per day.