Primal Defense? I could have sworn I had to refrigerate it when I took it. I also remember it being very expensive. But I will look into it. Thanks for the suggestion about the greens as well. I'm also thinking Grapefruit-Seed-Extract might be good too, since it's anti-viral, anti-fungal, a natural anti-biotic and doesn't need to be refrigerated. I took LB-17 for a month and didn't notice any difference with it.