Prescription-only antibiotic; use only for proven/suspected bacterial infection. Fluoroquinolones may cause tendonitis/tendon rupture, peripheral neuropathy, CNS effects (seizures, confusion), QT prolongation/arrhythmias, dysglycemia, and severe hypersensitivity. Risk of C. difficile–associated diarrhea. Use with caution in elderly, renal impairment (dose adjustment), history of seizures, myasthenia gravis, and in patients on QT-prolonging drugs. Stop and seek care if tendon pain, neuropathy symptoms, severe diarrhea, or allergic reaction occurs.