Polyps are not like gallstones. Gallstones are separate from the gallbladder wall. Polyps protrude from the gallbladder wall. They cannot be flushed out like a gallstone. I think they are caused by inflammation of some kind. I don't know exactly what causes them but there is evidence they can be reduced in size, if not completely healed. Oregon Graperoot tea a long with a Chinese Herb called Minor Bupleurum are very beneficial. If anyone else knows of anything that could be of help please let me know here. Thank you.