Just note that if you are a runner, Cipro is NOT advised. I was prescribed Cipro in an ER and then vaguely remembered the black box warning about tendon rupture. I called my doctor and she told me to take only the first dose and then come in the next day and get a prescription for a different antibiotic. Her husband is a sports medicine doctor, whom she consults with, so I trusted her opinion over an ER PA who KNEW I was a runner. The tendon rupture risk is very real for runners. If there's an alternative, try it first.