What to do when you have post nasal drip? is there any food to avoid?

Post Nasal Drip: Post nasal drip is due to nasal sinus drainage so you have to treat your nose. Some things at home you can do are nasal saline sprays, nasal steroid spray prescribed by your doctor and using a daytime antihistamine like Claritin, Zyrtec or Allegra. If this is from seasonal allergies you can also get a HEPA filter to decrease your indoor pollen load in addition to the above.

Yes: Casey, post nasal drip is usually allergic in nature. You could try an antihistamine like loratidine. In terms of foods, many doctors believe that milk allergies can manifest as congestion and postnasal drip. You could try avoiding dairy products for a month, and see if there is any change. Hope this helps!