Do you need to see a doctor for help getting rid of a postnasal drip?

You may try a couple: Things like sudafed with breakfast and loratidine at bedtime and see what happens. Otherwise, see your doctor if no better.

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