Tyzavan Ready-to-Use Pre-Mixed Vancomycin Injection IV Bags 100 mL x 12 Bags (RX)Tyzavan (Vancomycin Injection, premixed) Tyzavan is a branded intravenous formulation of vancomycin (a glycopeptide antibiotic) supplied as a ready to use premixed solution. Each Tyzavan bag is a single dose flexible bag containing vancomycin at 5 mg mL. For example, the 100 mL bag contains 500 mg vancomycin (100 mL 5 mg mL). Tyzavan is manufactured by Hikma Pharmaceuticals and is the only FDA approved room temperature stable, premixed vancomycin