My wife had post nasal drip for over 35 yeays taken all the meds sugessted by doctors went to allergie doctors no help until last month now no problem. take a peice of ginger root boil in some water (must slice) after boil on low heat for about 30 min put some in a cup with a littele honey and drink. maybe 4 or 5 cups a day also take a little peaice of ginger from the pot and hold in your mouth for a little while you should show some results after a few days. as for my wife she has had no return to the problem. I hope this works for you
Saline nose spray or just put salt and water and breath in thru your nose this was and old way years ago like going to the beach and swolling salt water.