I have done 3 Liver Flushes and one thing that I found very helpful was an apple juice fast. It breaks down the size of the stones and makes them easier to pass. As far as the Master-Cleanse I can tell you that I have not been sneezing my brains out as I usually do every morning, have not reached for my allegra and today has been the hotest day here in Boston and I didin't have to reach for my asthma inhaler! Love to rub that in my docs face ;-) im on day 4 and God willing will be able to do it to day 30 or so. Check out the Liver Flush Forum too they helped me out a lot. Good luck!