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': 'A highway truck driver has profuse rhinorrhea and sneezing. Which of the following drugs would you prescribe him? \nSelect and explain. \nA. Cetrizine, B. Pheniramine, C. Promethazine, D. Dimenhydrinate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: As the patient in the question is a truck driver, antihistamine which is best suitable for him is cetrizine. Cetirizine is a second generation antihistamine with least sedation. Promethazine and Dimenhydrinate are highly sedative and Pheniramine is moderately sedative preparations of H1 antihistamine which is not preferred for a truck driver as it causes sedation while driving. Ref: Essentials of Medical Pharmacology By K D Tripathi, 5th Edition, Pages 141-2', 'role': 'assistant'}]