Heliana, I've read this remedy in a number of places, but I doubt anyone who is having acute gallstone attacks should use it. A gallstone attack is excruciating - often requiring a trip to hospital for painkillers like morphine - and are often set off by fat & oil in the diet - because the gallbladder constricts to release bile to digest them. I can't think of anything that is more likely to land you in the ER vomitting, writhing, screaming and passing out in pain than drinking the quantity of olive oil in this "cure".