Answer
It is contraindicated after allergy to piperacillin, tazobactam or another penicillin, and after a previous acute severe reaction to another beta-lactam antibacterial.
Sources for this answer
- Piperacillin/Tazobactam 2 g / 0.25 g powder for solution for infusion — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.