You can get probiotics from just about everywhere. I go to a health food store. You can talk to them about why you want them and they can recommend which one is best for your situation. Alot of people use them for stomach problems. Have you tried a saline solution? You can buy it at just about anyplace and it's under $2. My doc recommeded it because lately mine are bothering me constantly and this works better than the meds. It doesn't burn when you spray it in your nose. You can also get a netty pot that will keep your nasal cavity clean; the health store can also help you with that. Both of these things should make you feel alot better. Good luck.