Thanks for finding that thread. I enjoyed seeing it again. I know what you mean about wanting to see research on this. From my subjective experience, I haven't had any sense that iodine was disturbing my good bacteria. In fact, one of the reasons I like Iodoral is that it's delivered more to my small bowel, and I thought that delivered a bigger punch to candida. However, iodine alone has not been enough for me, and Trapper's colloidal silver suggestion has been the one for me. It works great.