Answer
The selected product is labelled sugar free but contains the sweeteners sorbitol and maltitol. It must not be used by people with hereditary fructose intolerance.
Sources for this answer
- Benylin Herbal Cough & Cold Sugar Free Syrup — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.