This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine, Subject name: Pharmacology
[{'content': 'Which of the following statements about nateglinide is TRUE? \nSelect and explain. \nA. It is a long acting oral hypoglycemic drug, B. Taken just before a meal, it limits post prandial hyperglycemia in type 2 diabetes mellitus, C. It cannot be used in patients with renal impairment, D. It acts by opening K+ channels in myocytes and adipocytes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: * Nateglinide and Repaglinide are sho acting oral hypoglycemic agents. * These are used to limit the post-prandial hyperglycemia. * Like sulfonylureas, these drugs also act by blocking K+ channels in the b-cells of pancreas that lead to depolarization and release of insulin. It can be used in patients with renal impairment and in the elderly.', 'role': 'assistant'}]