DayQuil Cold & Flu: Acetaminophen, phenylephrine HCl, dextromethorphan HBr, guaifenesin. NyQuil Cold & Flu: Acetaminophen, phenylephrine HCl, doxylamine succinate, dextromethorphan HBr. DayQuil Cold & Flu: Headache, fever, sore throat, minor aches & pains. Nasal/sinus congestion & sinus pressure. Cough. Chest congestion Non drowsy. Alcohol free.. NyQuil Cold & Flu: Headache, fever, sore throat, minor aches & pains. Nasal/sinus congestion & sinus pressure. Sneezing, runny nose. Cough. Nighttime relief. www.pg.com. www.vicks.com. Questions? 1-800-362-1683. Parents: Learn about teen medical abuse. www.StopMedicineAbuse.org. Other information: Each 15 mL contains: sodium 57 mg. Store at room temperature and do not refrigerate.