Answer
No, the Zentiva benzydamine hydrochloride 0.15% w/v oromucosal spray product must not be frozen; the storage section also directs users to section 6.3 for storage conditions after first opening.
Sources for this answer
- Benzydamine Hydrochloride 0.15 % w/v Oromucosal SprayZentiva · emc · SmPC §6.4 Special precautions for storage · Version 1Document updated
Sources checked