Piperacillin Tazobactam (2 g/250 mg) (4 g/500 mg) Powder for Injection is a white or almost white crystalline powder.
PTZ 2.25: Each vial contains: Piperacillin (as sodium) 2 g, Tazobactam (as sodium) 250 mg.
PTZ 4.5: Each vial contains: Piperacillin (as sodium) 4 g, Tazobactam (as sodium) 500 mg.