I have done a few liver flushes. Not sure if all the green are stones or not. It may be just decongesting my gall bladder. My spring alergies did stop this year after doing two flushes. This was after 29 years of alergies. I tend to believe that the green things are not gall stones. I do believe there is benefit though. I am interested in the bitters idea. I have read a bit on it and it seems to make sense. I will give this a try as well.