i only take water and the lemon juice & iodine while flushing. a lot of people have sever nausea and diarrhea. i have not experienced that. i have been very constipated by it and when i finished the 3 days, i took epsom salts. i saw a lot of flukes. also, i take a lot of psyllium and green juice the days before the flush.
i don't know exactly what it's doing internally per se but i feel much better afterwards.