I had (fungal) sinus infections for years and was treated many times with Antibiotics which, along with sugar, caused candida.
It was so bad no natural antifungal worked. I tried everything. Finally, I got the NP to order an antifungal for 10 days at a time and it would be gone for a month or two then come back. I had to order diflucan online to finally get rid of it.
And, because my immune system was so whipped I was allergic to everything. The only thing that stopped the running nose was allergy shots. They really work.
I can finally breathe all day and night (sleep) and I don't look and act like I have a cold all year.
Good luck.