Short answer, from my own experience is yes. I was on a protocol that alternated ten days on, five days off, and what you took depended on what your symptoms were. I've forgotten what Colloidal Silver was recommended for: I believe it was those with an extremely frail constitution and serious deficiencies. The protocol I followed came from "Healing with Whole Foods" and while in the end it didn't get rid of my blasto, it did help alleviate some of the symptoms. I'm not saying Colloidal Silver is a magic bullet, or really if anything is, but I did feel better when I was on the protocol that involved that. I'd recommend the book anyway, it's a really enlightened attempt to understand traditional Asian medicine from an American perspective and it's encyclopaedic.