Magnesium sulphate fully contracts the gallbladder which has been demonstrated by cholecystography and it also relaxes the sphincter of Oddi.
The purpose of the flush protocol using Epsom Salts is the pump the biliary system. Twice with each administration of Epsom Salts and finally with the flush potion. The olive oil demands bile and the citric acid swells the volume of the bile flow from the liver with bicarbonate rich secretion. This induces a abnormally large flow of bile through the biliary system.