is a fluoroquinolone (flor-o-KWIN-o-lone) antibiotic that fights bacteria in the body. It is used to treat different types of bacterial infections, including skin infections, bone and joint infections, respiratory or sinus infections, urinary tract infections, and certain types of diarrhea. It is also used to treat gonorrhea.

Ciprofloxacin is also used to treat people who have been exposed to anthrax or certain types of plague.