Answer
Yes. Aspirin can cause ulceration or gastrointestinal bleeding; vomiting blood or passing black tar-like stools needs urgent assessment.
Sources for this answer
- Anadin Extra Soluble Tablets — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.