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': 'Cisapride differs from metoclopramide in which of the following aspect? \nSelect and explain. \nA. It accelerates gastric emptying, B. It alters colonic motility, C. Its action is blocked by atropine, D. It decreases the bioavailability of digoxin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cisapride does not block the dopamine receptors, thus does not cause extrapyramidal symptoms or alter the prolactin levels.\nThough its effects on the stomach and small bowel motility are similar to metoclopramide, the colonic motility is increased with cisapride (no effect with metoclopramide).\nLike metoclopramide, its actions on the gut are blocked by atropine.', 'role': 'assistant'}]