Adult NyQuil Intense Flu formulas list three active ingredients: acetaminophen, dextromethorphan HBr, and the antihistamine doxylamine succinate. Exact ingredient amounts are shown in the product details.
Available options include formulas for children ages 6 years and up and adult/older-children formulas labeled for 12 years and up.
NyQuil Intense Flu is described as providing about 6 hours of relief per dose for flu and cold symptoms.
Product listings show adult/Intense NyQuil syrups in black cherry and NyQuil Kids syrups in berry flavor.
NyQuil nighttime formulas are described as providing multi-symptom relief for body aches, fever, headache, sore throat, sneezing, runny nose, and cough to help you rest.