<prompt> Fluoroquinolone with highest oral bioavailabilityGemifloxacinNorfloxacinCiprofloxacinLevofloxacin  <response>: Fluoroquinolones:- Gemifloxacin is a third generation fluoroquinolone having absolute oral bioavailability. All third generation fluoroquinolones: Sparfloxacin, Gatifloxacin and Gemifloxacin have 100 oral biovailability. Among the Fluoroquinolones, Norfloxacin has the least oral bioavailability. Ref:- HL KK Sharmas Principles of Pharmacology 3rd Ed; Pg Num:- 724 