Levofloxacin (equivalent to Levofloxacin 500mg or 250mg) is a broad-spectrum fluoroquinolone antibiotic used to treat a variety of bacterial infections. It works by inhibiting bacterial DNA gyrase and topoisomerase IV enzymes, which are essential for bacterial DNA replication, repair, and transcription, thus preventing bacterial growth. Levofloxacin is effective against infections such as respiratory tract infections (like pneumonia, bronchitis, and sinusitis), urinary tract infections (UTIs), skin infections, and gastrointestinal infections. The 500mg dose is typically used for more severe infections, while the 250mg dose may be prescribed for milder cases. Levofloxacin is generally taken once or twice daily depending on the infection’s severity, and treatment duration varies based on the infection being treated.