Answer
The ADVANZ Pharma benzydamine hydrochloride 0.15% w/v mouthwash product has a shelf life of 3 years before opening and must be used within 6 months of opening.
Sources for this answer
- Benzydamine 0.15% w/v MouthwashADVANZ Pharma · emc · SmPC §6.3 Shelf life · Version 9Document updated
Sources checked