Answer
Yes. Ulceration, bleeding and perforation can occur, sometimes without warning. Black stools, vomiting blood or severe abdominal pain need urgent assessment.
Sources for this answer
- Emflex Capsules — 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.