kat May 22, 2020 at 12:55 am. I'm actively taking lecithin to reduce my Gall bladder sludge with the intention to bring the biliary duct down from 10mm. I've also read that resitant starch helps and have also incorporated potato starch and jerusalem artichoke insulin can also help to increase butyric acid to help stop the recycling of the sludge back into my biliary duct but I'm unsure ....