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. Hypokalemia, B. Muscle cramps, C. Decrease in urea level, D. Better glucose tolerance', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Inhibitors of renal epithelial sodium channel - Triamterene, Amiloride Side effects are - nausea, vomiting, rash, headache, dizziness, constipation, low blood pressure, muscle cramps, hypersensitivity, pancreatitis, and jaundice, electrolyte disturbances ( Essentials of Medical Pharmacology, K.D Tripathi,6th edition, page 571)', 'role': 'assistant'}]