Answer
No. It relieves symptoms by reducing painful smooth-muscle spasm but does not treat the underlying cause of IBS.
Sources for this answer
- NHSNHS · NHS medicine guidance
- Hyoscine butylbromide 10 mg coated tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.