I have done a few flushes and have passed some stones. I hear that the Hulda Clark protocol is pretty good, and I personally do the Amazing Liver and Gallbladder Flush by Andreas Moritz. I swear by it! Good stuff. I believe Marilyn also has some info on her page about stones and flushes as well. Make sure that whatever you do has a dilating agent. Very important! Best of luck to you!