Answer
Yes. Antibiotic-associated colitis can appear during treatment or weeks later; severe, persistent, bloody or mucus-containing diarrhoea needs prompt assessment.
Sources for this answer
- Clarithromycin 500 mg powder for concentrate for solution for infusion — 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.