Well, that might be. However, the Precautionary Principle applies here for me: saline and bicarb just mimic the chemistry inside your nose. Xylitol isn't necess

Well, that might be. However, the Precautionary Principle applies here for me: saline and bicarb just mimic the chemistry inside your nose. Xylitol isn't necessary, so why introduce it? Who knows what side effects it might have? YMMV.