DayQuil: Acetaminophen, Phenylephrine HCl, Dextromethorphan HBr. Headache, fever, sore throat, minor aches & pains. Nasal congestion, sinus pressure. Cough. Non-drowsy. NyQuil: Acetaminophen, Doxylamine Succinate, Dextromethorphan HBr. Headache, fever, sore throat, minor aches & pains. Sneezing, runny nose. Cough. Nighttime relief. www.vicks.com. Questions? 1-800-362-1683. Parents: Learn about teen medicine abuse. www.StopMedicineAbuse.org. Made in Canada. Other information: Store at room temperature.