Teicoplanin A2-5 is primarily used as an antibiotic in the treatment of serious infections caused by Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and enterococci. It is particularly effective in cases where patients are allergic to beta-lactam antibiotics or when resistance to other antibiotics is observed. The compound is often administered intravenously for severe infections such as septicemia, endocarditis, bone and joint infections, and skin and soft tissue infections. Its long half-life allows for once-daily dosing, making it a convenient option for both hospital and outpatient settings. Additionally, Teicoplanin A2-5 is sometimes used as a prophylactic agent to prevent infections in high-risk patients undergoing surgery or those with compromised immune systems. Its ability to bind strongly to bacterial cell walls and inhibit cell wall synthesis makes it a potent therapeutic option in combating resistant bacterial strains.