Hyoscine butylbromide, also known as scopolamine butylbromide and sold under the brandname Buscopan, is a medication used to treat crampy abdominal pain, renal colic, and bladder spasms. It is also used to improve a death rattle at the end of life. Hyoscine butylbromide can be taken by mouth, injection into a muscle, or into a vein.