A 65-year-old female is admitted to the hospital with pneumonia. Her medication history includes a long-term use of warfarin for atrial fibrillation. The physician orders a new antibiotic, levofloxacin, to treat her pneumonia. While reviewing her chart, the nurse notes that the patient has previously experienced an adverse reaction to fluoroquinolones.

Given that levofloxacin is contraindicated for this patient due to her history, the nurse must advise the physician of an appropriate alternative antibiotic that does not carry a similar risk. In this scenario, the blank must be filled with the alternative antibiotic:

One potential alternative to levofloxacin is __________.