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: Medicine
[{'content': 'Treatment of choice for polyuria in lithium induced diabetes insipidus is: \nSelect and explain. \nA. Vasopressin, B. Mineralocoicoid antagonist, C. Amiloride, D. Loop diuretic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Amiloride): Amiloride is currently the treatment of choice for polyuria in lithium induced diabetes insipidus. Amiloride a potassium-sparing diuretic is the drug of choice to treat polyuria and raise maximum urinary osmolality in lithium-treated patients. Amiloride blocks the cellular uptake of lithium ENaC, thus antagonizing the inhibitory effects of Lithium on Vasopressin induced water transpo', 'role': 'assistant'}]