Levofloxacin is an antibiotic that belongs to the fluoroquinolone class. It is used to treat various bacterial infections, including those affecting the lungs, skin, and urinary tract. Levofloxacin works by inhibiting the bacteria's ability to reproduce and repair their DNA, ultimately leading to their death. This medication is typically taken orally in tablet form or administered through an intravenous (IV) line in a hospital setting. Common side effects may include nausea, diarrhea, and headache. It is important to complete the full course of treatment as prescribed to prevent antibiotic resistance.