After two Dr. Clark cleanses which did not remove any gallstones, I tried using a North American Herb & Spice blend of herbs called "Liva Clenz". It is made by the same people who make Oreganol. It calls for you to take 30 drops of the herbs in a quarter cup of olive oil twice a day. I added the juice of two fresh lemons both times as well. I didn't lie down or anything and ate lightly thru the day. At night I took 1/2 of a colon-cleansing capsule. In the morning I passed a handful of large stones!! The only drawback is that it is not tasty & has to be sipped to get it down; and the price which is about $30. Still, it is another option that is out there.
Good luck all!