I have not used colonics during any of these flushes as the Epsom Salts has worked beautifully to clean out the stones, and the entire colon. The Epsom Salts is vital in my opinion to open the liver passage so the (more) stones will pass. I have done 12 in a row now and always had great results. Without using the Epsom Salts I doubt very much that nearly as many stones would have been expelled. Please check out Dr. Andreas Moritz ’s comprehensive book on Liver Flushes. mf