Good for you! I hope it works. At least you can be pretty sure it won't do you any harm, except for die-off. There is a good chance it will reduce SIBO, and this may also release some lead if the bacteria are holding onto it. Potentially, Symbion can eradicate both bacterial and Candida overgrowth right at the epithelial level, by stimulation of the immune system. But of course this is just speculation on my part. I have a gut feeling zinc will work very well alongside Symbion. Both stimulate TH1 immune response within the bowel.