Drink plenty of water
Use a humidifier
Try saline nasal rinses
Use steam inhalation
Sleep with your head elevated
Avoid smoke, dust, and strong odors
Use over-the-counter antihistamines if allergies are the cause
Use over-the-counter decongestants if appropriate
Use nasal steroid sprays as directed
Gargle warm salt water
Suck on lozenges or hard candy
Treat acid reflux if present
Avoid dairy if it worsens mucus for you
Rest your voice
See a doctor if symptoms last more than 10 days
See a doctor if you have fever, shortness of breath, wheezing, chest pain, or coughing up blood