I have had postnasal drip dor many years and like a previous poster it has gotten worse with age and perhaps as a consequence of covid. I used to tale otc antihistamines - thise no longer work. I am seeing the ent for this. Allegra and astepro did bot work. Next singulair and riyalis nasal spray. The singulair made my depression much worse and caused memory problems. I am going back to the ENT today. About 10 years ago , i had allergy shots . He will probably recommend allergy testing. Not a major’problem in comparison with others, but it is most annoying to be constantly clearing my throat.