Answer
An unopened vial of the Reig Jofre UK Ltd piperacillin + tazobactam 4 g/0.5 g powder for solution for infusion product has a shelf life of 3 years.
Sources for this answer
- Piperacillin/Tazobactam 4 g/0.5 g powder for solution for infusionReig Jofre UK Ltd · emc · SmPC §6.3 Shelf life · Version 2Document updated
Sources checked