Answer
The Pfizer Limited topotecan hydrochloride 4 mg/4 ml concentrate for solution for infusion product has an unopened-vial shelf life of 3 years.
Sources for this answer
- Topotecan Hospira 4 mg/4 ml concentrate for solution for infusionPfizer Limited · emc · SmPC §6.3 Shelf life · Version 18Document updated
Sources checked