Drink plenty of water
Use saline nasal spray
Try nasal irrigation with a saline rinse
Use a humidifier
Avoid allergens and irritants
Sleep with your head elevated
Gargle warm salt water
Use over-the-counter antihistamines if allergies are the cause
Use over-the-counter decongestants if appropriate
Use a steroid nasal spray if recommended by a doctor
Treat acid reflux if it is contributing
Stop smoking and avoid secondhand smoke
See a doctor if symptoms persist or worsen