Each 4.5 g vial contains: Sterile mixture of Piperacillin sodium and Tazobactam sodium equivalent to Piperacillin 4.0 g and Tazobactam 0.50 g. It contains no excipients or preservatives.
White to off-white sterile, lyophilised powder of piperacillin and tazobactam as the sodium salts filled into glass vials. After reconstitution, the solution should be clear, colourless to pale yellow, free from visible particles.