I don't really care for foods with xylitol. I don't mind eating foods with regular sugar. The only xylitol product I use is xylitol nasal spray which was recommended to me by my doctor. This nasal spray is great and clears up congestion right away. Whenever I feel that my allergies are going to act up, I start using this nasal spray and it prevents my allergies. It's also very helpful when I'm sick and have a stuffy nose.
People with chronic allergies definitely need to give this nasal spray a try. My doctor said that it works because it prevents bacteria growth and it's also very soothing. I'm not sure how it works exactly for allergies but it does.