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': 'All are true about ciprofloxacin except ? \nSelect and explain. \nA. C/I in pregnancy, B. DNA inhibition, C. Most potent 1st generation fluoroquinolone, D. More active at acidic pH', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., More active at acidic pH Ciprofloxacin is the most potent first generation FQ. o Ciprofloxacin inhibit DNA gyrase and is contraindicated in pregnancy. It is less active at acidic pH.", 'role': 'assistant'}]