LEO 500 mg contains the active ingredient Levofloxacin, which is a broad-spectrum antibiotic belonging to the fluoroquinolone class. It is used to treat a variety of bacterial infections, including those affecting the respiratory tract (such as pneumonia and bronchitis), urinary tract, skin, and soft tissues. Levofloxacin works by inhibiting bacterial DNA gyrase and topoisomerase IV, enzymes essential for bacterial replication, transcription, repair, and recombination. This action effectively kills the bacteria or stops their growth. The medication is usually taken orally and is prescribed based on the type and severity of the infection. As with all antibiotics, it’s important to complete the full course of treatment even if symptoms improve early, to prevent antibiotic resistance.