Has anyone here ever tried the supplement Host Defense? I have been taking it for quite some time and I believe it does what it is suppose to do. It is suppose to build your immune system and keep you healthy from colds, flu, etc....In the past year, I have had one cold as opposed to the many, many colds that I usually have and that one was so minor that I was over most of the symptoms in a day or two. It is made mostly of mushroom. I know that whole mushrooms also have some great health benefits, but I can't stand them, so this is an option for me. Let me know if you have any experience or information with Host Defense type supplements.