Hi, I don't want to be rude by contradicting, but my sister did a week long course on liver flushes and all related stuff (she works in a health food shop as a health consultant). Apparently those things that come out are not gallstones or indeed anything to do with bile, they are coagulations of stuff that was lurking in your intestine. If you had 50 gallstones, some as big as your thumb, you would not only need a bile duct the size of a blue whale, you'd also have been hospitalised with an acute crisis needing your gallbladder removed long ago! However, these bile flush activities do work by giving you a little "bile squirt." They do it by saving up bile for a day or more (however long you do the fasting phase) and then shooting it out all in a brief rapid discharge. So you are not actually making more bile than you would have done, you are just saving it for ejection all in one go. The idea is that this cleanses the bile duct, which based on logic I believe it does, though there is no definite medical proof of this.