Oh my goodness! I've had the same issues regarding the post nasal drip drainage. I've been on antibiotics so many times during my life that I lost track. I had sinus surgery years ago (2004) and he removed a benign cyst high up in my nasal passage cleaned out the infection that antibiotics didn't help so I have dealt with this problem for a very long time. I do have acid reflux and have been on different medications but it didn't help the drainage and I quit taking PPI's and have the acid reflux under control by altering my diet. Every CT scan I've had in the last 3 years has shown clear sinuses. Just a few weeks ago I got sick and was put on antibiotic and prednisone and even though I believe what I had was viral, while on the antibiotic and prednisone, I was finally able to expel some of the congestion in my throat. It was very thick and chunky. Nevertheless, I felt a lot better but now the drainage is back since I finished both medications. I also have extremely dry sinus and my nose bleeds if there is a drop in humidity. I do not take antihistamines or nose sprays because it dries out sinus even worse. What are the antifungal meds that you take? Are they prescription?