Ciprofloxacin, the generic name for Cipro, is an antibiotic used to treat bacterial infections.  Common indications include lung, urinary tract, prostate, digestive, STDs, and joint infection.
Ciprofloxacin is usually taken twice daily with or without food, and with plenty of water
You should always remember to finish the entire course even if you start to feel better half way through treatment, this will make sure you receive the full effect of the antibiotic.