Answer
It relaxes gastrointestinal smooth muscle, reducing spasm and movement that can cause discomfort or interfere with selected diagnostic procedures.
Sources for this answer
- Buscopan Ampoules — Current selected SmPCemc · Summary of Product Characteristics
- Hyoscine butylbromide 20 mg/ml solution for injection — 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.