Drink plenty of water
Use a saline nasal spray
Rinse your nose with a saline neti pot or squeeze bottle
Inhale steam from a hot shower or bowl of hot water
Sleep with your head elevated
Use a humidifier
Gargle with warm salt water
Avoid smoke, strong odors, and allergens
Use an over-the-counter antihistamine if allergies are the cause
Use an over-the-counter decongestant if appropriate
Use an over-the-counter expectorant if mucus is thick
Treat acid reflux if it is contributing
See a doctor if symptoms are severe, persistent, or worsening