Drink plenty of water
Use a humidifier
Inhale steam
Take a hot shower
Use saline nasal spray
Rinse with a saline nasal wash
Gargle warm salt water
Avoid smoking
Avoid secondhand smoke
Avoid alcohol
Limit dairy if it worsens mucus for you
Use over-the-counter decongestants if appropriate
Use over-the-counter antihistamines if allergies are causing mucus
Use expectorants if mucus is thick
Sleep with your head elevated
Rest
Seek medical care if mucus is persistent, bloody, green with fever, or causing trouble breathing