Gemifloxacin is the updated fluoroquinolone and promptly carries the highest efficacy over any other drug in respiratory tract infections or pneumonia. It has 5 folds more affinity than ciprofloxacin in binding and inhibiting bacterial topisomerase-IV and thus ensures less microbial resistance than ciprofloxacin. All clinical trials have established gemifloxacin as a potent and effective antibiotic in RTI. Its safety margin is almost equal to ciprofloxacin.
But I wonder, the market shows gemifloxacin as a potential negative growth medicine for a long time.