Herbs to dissolve gallstones... milk thistle

Milk thistle, a flowering herb native to the Mediterranean region, is sometimes recommended for gallstone and gallbladder disease; however, much is unknown still about its dissolving effect on gallstones. The seeds and leaves of milk thistle have been shown to desaturate bile, a fluid made by the liver, and induce gallstone dissolution, according to the New York University Langone Medical Center website. Milk thistle possesses little or no toxicity and does not produce side effects even when administered repeatedly in large doses.

Taken from livestrong.com