are dayquil and nyquil the same?
Dayquil does not contain alcohol. Nyquil Cold & Flu also contains three active ingredients: acetaminophen, dextromethorphan, and doxylamine, an antihistamine related to the active ingredient in Benadryl (diphenhydramine). Doxylamine can make you profoundly drowsy, so it's better suited for nighttime use.