What can i do about postnasal drip?

Hydration: Drink 6-8 glasses of water a day. Also try Guaifenesin which is in a lot of otc cough and cold preparations.

Postnasal Drip: Every day, glands in the linings of your nose make about a quart of mucus each day. The excess can come out of the nostrils -- that’s a runny nose. When the mucus runs down the back of your nose to your throat, it's called postnasal drip. http://www.webmd.com/allergies/postnasal-drip