Answer
Rarely, excessive absorption can cause methaemoglobinaemia, reducing the blood's ability to carry oxygen. Blue or grey lips or skin and breathlessness require emergency help.
Sources for this answer
- Orajel Mouth Gel — Current selected SmPCemc · Summary of Product Characteristics
- Orajel Extra Strength — 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.