Teicoplanin is a glycopeptide antibiotic used to treat serious Gram-positive bacterial infections, especially those caused by methicillin-resistant Staphylococcus aureus (MRSA) and other resistant bacteria.

It works by inhibiting bacterial cell wall synthesis, which leads to bacterial death. Teicoplanin has a long half-life, allowing once-daily dosing in many cases, making it convenient for both hospital and outpatient treatment.