5 Ways to Stop Post-Nasal Drip, According to a Doctor

Mucus plays an important role in your health, keeping your nasal lining clean and moist and stopping infection. Post-nasal drip can occur as a result of allergies, acid reflux, sinusitis, or a viral infection.  David Erstein, MD, a board-certified allergist and immunologist gives you 5 tips on stopping a post-nasal drip.