piperacillin-tazobactam combination product [ AHP brand of pipercillin sodium - tazobactam sodium,Tazocel,Tazocin,Wyeth brand of pipercillin sodium - tazobactam sodium,Zosyn,pipercillin sodium - tazobactam sodium,tazocillin ] tradename; an antibiotic combination product; used for the intravenous treatment of intra-abdominal, pelvic, and skin infections and for community-acquired pneumonia of moderate severity