Mucinex Fast-Max Cold & Flu and Cough Relief 650 mg - 20 mg - 400 mg - 10 mg / 20 mL Strength LiquidMucinex Fast Max Cold & Flu temporarily relieves symptoms, i. e., cough; nasal congestion; minor aches and pains; sore throat; headache; stuffy nose; sinus congestion and pressure Loosens phlegm (mucus) and thins bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive In each 20 mL dose, there is 650 milligrams acetaminophen; 20 milligrams dextromethorphan HBr; 400 milligrams guaifenesin; and 10