This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Which of the following is used in anaphylactic shock \nSelect and explain. \nA. Isoprenaline, B. Adrenaline, C. Nor adrenaline, D. Terbutaline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref: HL Sharma 3rd ed pg no:173 Adrenaline is the DOC for anaphylactic shock, which occurs due to release of histamine causing bronchoconstriction, laryngeal edema- resp failure and death adrenaline is the physiological antagonist for histamine', 'role': 'assistant'}]