<prompt> All are true about ciprofloxacin except ?CI in pregnancyDNA inhibitionMost potent 1st generation fluoroquinoloneMore active at acidic pH  <response>: 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. 