On the recommendation of someone else on one of these forums here a while back, I have bought Gold Coin Grass Tincture. This is a traditional Chinese medicine used to crush and soften stones. You'll find it at http://www.sensiblehealth.com/gallbladder.html
One is supposed to use up the bottle(abt. 2 week's supply)before doing the liver flush. Can't tell you about my results yet since I'll be doing the flush this week-end.