I've had excellent results releasing stones with gold coin grass tincture. I take 3 dropper fulls throughout the day. I also take a cayenne capsule once/day to help carry the tincture into the gallbladder/liver. The result is I can physically feel my liver and gallbladder opening up and releasing stones/sludge. I've been on the malic acid for a few months with very limited success. For me the gold coin works way better. Here's the one I use: