Used primarily as an antibiotic to treat various bacterial infections. Effective against Gram-negative and some Gram-positive bacteria. Commonly applied in treating infections of the respiratory tract, urinary tract, skin, and central nervous system. Also used in eye and ear drops for localized infections, and for prevention and treatment of post-surgical or severe injury infections. In veterinary medicine, it helps manage infections in animals. Additionally, it is utilized in cell culture to prevent bacterial contamination. Often administered via injection for systemic infections. Should be used under medical supervision to avoid side effects and resistance.