Known as: Piperacillin Sodium 4 g in 50 mL / Tazobactam Sodium 0.5 g in 50 mL INTRAVENOUS INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION, PIPERACILLIN SODIUM 4 g in 20 mL / TAZOBACTAM SODIUM 0.5 g in 20 mL INTRAVENOUS INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION, PIPERACILLIN SODIUM 4 g / TAZOBACTAM SODIUM 0.5 g PARENTERAL INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION