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: Pharmacology
[{'content': 'Which of the following is not a non-sedating antiallergic drug? \nSelect and explain. \nA. Cetrizine, B. Astemizole, C. Terfenadine, D. Triprolidine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Triprolidine o Second generation antihistaminics have no CNS depressant action (sedation, diminished aleness) o Cetrizine, astemizole and terfenadine are second generation antihistaminics. o Triprolidine is first generation antihistaminic with mild sedative propey.", 'role': 'assistant'}]