<prompt> Ture about lactulose is -Blood ammonia10 absorbed from gutOsmotic laxativeDisaccharide of lactose and sucrose  <response>: Ans. is c i.e., Osmotic laxative o Lactulose is an osmotic purgative. o Lactulose is a semisynthetic disaccharide of fructose and lactose which is neither digested nor absorbed in the small intestine. o Lactulose causes reduction of blood NH3 concentration by 25-50 in patients with hepatic encephalopathy. 