When a cold comes on strong, knock it out with Vicks DayQuil and NyQuil Severe Cold and Flu Liquid Medicine, Over-the-Counter Medicine, 2x12 fl oz. Just one dose starts working fast to relieve 9 of your worst cold and flu symptoms, to help take you from 9 to none. From the world's #1 selling OTC cough and cold brand, Vicks DayQuil and NyQuil SEVERE provide fast, powerful, maximum strength relief for your worst cold and flu symptoms. With this DayQuil and NyQuil SEVERE Liquid Combo pack, you'll have the cold and flu multi-symptom relief you need on hand, day and night. Try Vicks DayQuil SEVERE for fast, non-drowsy daytime relief and use Vicks NyQuil SEVERE when you need maximum strength, nighttime relief for your ugliest, roughest, toughest cold symptoms so you can get the rest you need. Vicks DayQuil SEVERE provides 9-symptom relief to treat coughing, stuffy nose, minor aches, chest congestion, sinus congestion, sinus pressure, sore throat, headache, and fever. Vicks NyQuil SEVERE provides 9-symptom relief to treat coughing, stuffy nose, minor aches, sneezing, sinus congestion, sinus pressure, sore throat, headache, and fever. Vicks has been trusted for over 125 years to relieve your cold and flu symptoms. When you need fast, powerful cold and flu relief, turn to Vicks DayQuil and Nyquil. DayQuil and NyQuil are the #1 pharmacist recommended daytime and nighttime cough, cold & flu brands* NyQuil: Active ingredients per 30 mL dose for adults are acetaminophen 650 mg (pain reliever/fever reducer), dextromethorphan HBr 20 mg (cough suppressant), doxylamine succinate 12.5 mg (antihistamine), and phenylephrine HCI 10 mg (nasal decongestant). Store at room temperature; do not refrigerate. Take only as directed. Use only the dose cup provided. Do not exceed 4 doses per 24 hours. Adults and children 12 years and over take 30 mL every 4 hours. DayQuil: Active ingredients per 30 mL dose for adults are acetaminophen 650 mg (pain reliever/fever reducer), dextromethorphan HBr 20 mg (cough suppressant), guaifenesin 400.