There is nothing to be scared of, and after one flush you won't be confused anymore,I promise. On my first flush I got out at least 25 stones that size, plus another couple hundred pea-size, lots of little ones and one monster that looked like 3 or 4 marble-sized smushed together. Nothing hurt because I took a lot of Epsom Salts . Click on "Liver Flush" on the home page and pick out one that looks interesting. I used Dr. Clark's formula and was amazed. Do it once and you'll be hooked.