Shaking crystals doesn't have a thing to do with it. Blastocystis Hominis is a parasite (protozoa) that is very hard to eradicate, and most mainstream doctors do not know enough about it, because they don't have time to research it. I have been to 3 or 4, and the last one was honest enough to say he didn't know what to say, because of everything I had already taken (including Flagyl, which kills everything inside your body-good and bad); he actually agreed with me when I told him that I thought I needed to build up my immune system (damaged by all chemicals), so my body could fight it.