Buscopan is used to treat cramps (spasms) of the stomach, intestines, and bladder. It may be used to stop spasms prior to radiology imaging. Buscopan targeted relief from: Abdominal pain ,discomfort and cramps. It relieves the pain of stomach cramps by helping the gut to relax. The Medicine works very quickly. Painful cramps should ease within 15 minutes. It's unusual to have any side effects, but some people get a dry mouth, constipation and blurred vision.