Does Dayquil Decongest Your Nose?

DayQuil Cold & Flu is a combination medicine used to treat headache, fever, body aches, cough, stuffy nose, and sinus congestion caused by allergies, the common cold, or the flu.

Does DayQuil cause rebound congestion?

It doesn't raise your blood pressure and heart rate as much, or cause as much trouble falling asleep. Doesn't give you rebound congestion (worse symptoms when you stop taking it) like nasal spray decongestants do.

What does DayQuil do to mucus?

It works by thinning and loosening mucus in the airways, clearing congestion, and making breathing easier. Dextromethorphan belongs to a class of drugs known as cough suppressants. It acts on a part of the brain (cough center) to reduce the urge to cough.