Vancomycin CDP-1 is primarily used in the medical field as an antibiotic to treat severe bacterial infections, particularly those caused by Gram-positive bacteria. It is highly effective against infections that are resistant to other antibiotics, such as methicillin-resistant Staphylococcus aureus (MRSA). It is often administered intravenously for conditions like sepsis, endocarditis, and skin infections when other treatments have failed. Additionally, it is used in cases of colitis caused by Clostridioides difficile when oral administration is required. Its role is critical in managing life-threatening infections in hospital settings, especially for patients with compromised immune systems.