Used to treat a wide range of bacterial infections, including respiratory tract infections, urinary tract infections, skin and soft tissue infections, intra-abdominal infections, and septicemia. Particularly effective against Gram-negative bacteria, including Pseudomonas aeruginosa. Often used in hospital settings for severe infections and in patients with compromised immune systems. Commonly combined with sulbactam, a beta-lactamase inhibitor, to enhance its effectiveness against resistant strains. Frequently chosen for empirical therapy when the causative organism is unknown but broad-spectrum coverage is needed.