This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Ture about lactulose is - \nSelect and explain. \nA. Blood ammonia, B. 10% absorbed from gut, C. Osmotic laxative, D. Disaccharide of lactose and sucrose', 'role': 'user'}, {'content': "Answer: C \nExplanation: 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.", 'role': 'assistant'}]