Here is the formula for the liver and gallblader cleanse formula that I prefer to use.
Put one teaspoon each of Oregon grape root, marshmallow root and dandelion root in one quart of water
Simmer the roots for five minutes before turning the heat off
Add a half teaspoon each of nettle leaves and peppermint leaf
Let steep for twenty minutes before straining all the herbs
Drink at least one cup a day
You can also make a tincture or pills with this formula.
Nettle leaves as a liver detox much like dandelion but also provides minerals for nerves.
Dandelion as a liver detox herb for clearing waste, polutants and stimulating bile production. Treats stones, inflammation and jaundice.
Oregon Graperoot is an antibacterial, antiparasitic, digestive and liver tonic. Pigment stones are caused by bacteria
I know a some people are using the olive oil and lemon or grapefruit juice as a liver flush.
I would like to mention this. According to Michael Murry N.D. and Joseph Pizzorno N.D., the authors of the "Encyclopedia of Natural Medicine", the impressively large Gallstones that are magically passed with no pain are not Gallstones at all, but rather balls formed when a chemical reaction causes oil and lemon to combine with minerals in the intestine.
You can test this theory yourself. Place a paper towels outside in the warm sun and put the stones on the paper towel for a few hours. You can observe then turning back into oil and being absorbed into the paper towel until there is no more stones there.