Maximum Strength Mucinex Fast-Max Cold & Flu and Mucinex Nightshift Severe Cold & Flu are all-in-one, multi-symptom cold and flu relief medicines for day & night cold and flu symptoms. Mucinex Fast-Max Cold & Flu liquid helps reduce fever & relieves sore throat pain, headache, body pain, cough, chest congestion, nasal congestion and sinus pressure. Mucinex Nightshift Severe Cold & Flu liquid helps reduce fever & relieves sore throat pain, headache, body pain, cough, nasal congestion, sneezing & runny nose for a better morning. Mucinex is the #1 Cough & Cold Brand Doctors Trust* and #1 Pharmacist Recommended Brand**. This product contains a total of 12 Fl Oz (2x6 Fl Oz bottles). It can be used by adults and children 12 years of age and over.