My experience says you have to take a systemic dewormer all the time to kill off the parasites in the whole body as well as do a Colon Cleanse that has parasite killing herbs in it. Dr. Christopher's products that Schulze has will do it. Your body will keep making stones as long as there are parasites in it that it has to protect itself from. If they're in the colon, they'll go through the colon wall and into the bloodstream and end up in the liver. Therefore, it's getting rid of the parasites that's the important thing and also clearing your liver of stones and other debris already there. It's an individual thing how long it takes for both. No special number for anybody.