Ceftaroline fosamil is primarily used as an antibiotic to treat bacterial infections. It is effective against a range of Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA), and certain Gram-negative bacteria. It is commonly prescribed for skin and soft tissue infections, such as cellulitis and abscesses, as well as community-acquired bacterial pneumonia. The drug works by inhibiting bacterial cell wall synthesis, making it a valuable option for infections resistant to other antibiotics. It is administered intravenously, often in hospital settings, to ensure proper dosing and monitoring. Its broad-spectrum activity makes it a critical tool in managing complex or resistant infections.