Used to treat severe bacterial infections, including meningitis, pneumonia, intra-abdominal infections, and complicated urinary tract infections. Effective against multidrug-resistant bacteria, often reserved for hospital-acquired infections. Commonly administered intravenously in critical care settings. Preferred in patients allergic to other beta-lactam antibiotics like penicillins or cephalosporins due to lower cross-reactivity. Also used in immunocompromised patients, such as those with cancer or undergoing chemotherapy, to manage life-threatening infections.