This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pharmacology
[{'content': 'Triamterene causes \nSelect and explain. \nA. Better glucose tolerance, B. Muscle cramps, C. Decrease in urea level, D. Hypokalemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Inhibitors of renal epithelial Na+ channel Include Triamterene and amiloride. Triamterene:- It is incompletely absorbed orally, paly bound to plasma proteins, largely metabolized in liver to an active metabolite and excreted in urine. Plasma t 1/2 is 4 hours, effect of a single dose lasts 6-8 hours. Side effects:- consist of nausea, dizziness, muscle cramps and rise in blood urea. Impaired glucose tolerance and photosensitivity are repoed, but urate level is not increased. Ref:- kd tripathi; pg num:-590', 'role': 'assistant'}]