I had severe sinus infection for a couple years, so bad I could hardly open my eyes due to the pressure and all the horrible symptoms. I tried everything! I read something about probiotics and sinuses. I started taking acidophilus bifidus, high 10 billion CFU probiotics, and drinking kefir, and I put distilled water in neti pot and emptied the capsule of probiotics into the neti pot and I added some baking soda into the neti pot this get rid of any stinging sensation in the nose. I did this daily for seven days sinus infection finally gone!