Answer
The prolonged-release tablet’s empty membrane may pass through the bowel after the active ingredient has been released. This does not mean the treatment failed.
Sources for this answer
- Oxybutynin hydrochloride Aspire 5mg prolonged release 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.