Answer
Selected Honey and Lemon and Menthol products contain very low levels of gluten and are described as unlikely to cause problems in coeliac disease. They should not be used in wheat allergy.
Sources for this answer
- Strepsils Honey and Lemonemc · SmPC Current selected SmPC · Version 8
- Strepsils Menthol 1.2mg / 0.6mg Lozenges