I have just started one of the two recommended herbal treatments for SIBO. I'm am taking Candibactin AR and Candibactin BR from Metagenics. I'm supposed to take two of each twice a day. I'm not up to the full dose yet and boy is it making all my ME/CFS symptoms worse. I can barely move . I know taking an antibacterial can cause some die off. I hope it's short lived as my functioning level is already low enough.