You can do the liver cleanse without doing those other things first. The Andreas Moritz protocol does not focus on parasites. He does recommend a kidney cleanse, but I didn't do that until I'd already done a number of flushes. The one thing that I do think is important is some kind of Colon Cleanse after the flush. The cleanse always leaves toxins in the colon and it will make you feel really bad if you don't get them out some way. I always got a colonic within a few days.