Answer
New or severe mouth ulcers can be an early sign of toxicity, particularly when accompanied by fever, sore throat, bruising or bleeding. Seek prompt clinical assessment.
Sources for this answer
- NHSNHS · NHS medicine guidance
- NHS Specialist Pharmacy ServiceNHS Specialist Pharmacy Service · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.