Used primarily as an antibiotic to treat serious bacterial infections caused by Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). It is particularly effective in cases where other antibiotics have failed or are unsuitable. Commonly administered in hospital settings for infections like sepsis, endocarditis, and skin and soft tissue infections. It is also used as a prophylactic measure in patients undergoing surgery or those with compromised immune systems. The drug is often given intravenously due to its poor oral absorption. Its long half-life allows for once-daily dosing, making it convenient for both patients and healthcare providers.