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': 'Drug not used in SIADH is: \nSelect and explain. \nA. Demeclocycline, B. Desmopressin, C. Restriction of free water intake, D. 3% NaCl', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Desmopressin is ADH and will exacerbates the symptoms of SIADH. Hypeonic saline (3%NaCl) is used for severely symptomatic patients with hyponatremia. Demeclocycline decreases the release of ADH.', 'role': 'assistant'}]