Answer
Age suitability depends on the formulation. The selected mouthwash is for people aged 13 years and over, while the spray has separate paediatric instructions. Check the exact product with a pharmacist.
Sources for this answer
- Benzydamine Hydrochloride 0.15 % w/v Oromucosal Spray — Current selected SmPCemc · Summary of Product Characteristics
- Benzydamine 0.15% w/v Mouthwash — Current selected SmPCemc · Summary of Product Characteristics