quinupristin /kwinu′pris-tin/ , a semisynthetic antibacterial effective against a variety of gram-positive organisms. It is used in conjunction with dalfopristin in the treatment of serious bacteremia caused by vancomycin-resistant Enterococcus faecium and complicated skin and skin structure infections caused by Streptococcus pyogenes or methicillin-sensitive Staphylococcus aureus. It is administered intravenously.
