Hi everyone. I'm so glad to have stumbled across you guys. I've been struggling with what you're all describing for over 3 years. Here's my own experience with this mysterious and persistent post nasal drip:

Mine started in March 2020 after a sinus infection lasting 2 months (UK doctors are stingy with antibiotics.) While it's possible I had covid, I showed no typical symptoms (cough, fever.) I hadn't even considered it could be covid-related before I found this discussion.

Now, over 3 years on, the drip has continued and has been chornic. Thick, sticky mucus in my throat all day, every day. I can either spit it out, swallow it or scoop it out with my tongue and remove it from my tongue with a tissue. The consistency of it is thick, gloopy and sticky. Even once I've cleared the mucus I'm able to get rid of, I can still feel it sitting in my throat - too far down for me to get to. This causes a clogged feeling. I'm quite certain it comes from behind my nose as I can feel it initially building up there. Like some of you, it gets worse after eating. It also can occur when I'm doing nothing at all, having not eaten anything. I've attempted many times to establish a pattern but at this point have to acknowledge that there isn't one.

I have been to many different ENTs. I have tried an array of different nasal sprays, saline rinses (with and without biofilm busters mixed in), an upper endoscopy to check for LPR (turns out I don't have it) and the Clarifix procedure. None of this has helped at all. Quite disheartening isn't it! However, I'm not giving up hope - I won't accept that this is going to be for life. There surely must be something that will remedy it. Who knows, maybe an obscure problem requires an obscure remedy.

I'm going to try everything that has been suggested throughout this thread. Should I be fortunate enough to stumble across the thing that cures it, I will report back and let you all know. Thanks!