Hyoscine butylbromide, also known as scopolamine butylbromide[1] and sold under the brandname Buscopan,[2] is a medication used to treat crampy abdominal pain, renal colic, and bladder spasms.[2][3] It is also used to improve a death rattle at the end of life.[4] Hyoscine butylbromide can be taken by mouth, injection into a muscle, or into a vein.[2]

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[7(S)-(1α,2β,4β,5α,7β)]-9-butyl-7-(3-hydroxy- 1-oxo-2-phenylpropoxy)-9-methyl-3-oxa- 9-azonitricyclo[3.3.1.0(2,4)]nonane |
| Trade names | Buscopan |
| Pregnancy category |
AU: B2 |
| Legal status |
AU : S2 (Pharmacy only) UK : General sales list (GSL, OTC) |
| Routes of administration |
Oral, rectal, intravenous |
| Bioavailability | <1% |
| Protein binding | Low |
| Biological half-life | 5 hours |
| Excretion | Renal (50%)[citation needed] and fecal |
| CAS Number | 149-64-4 |
| ATC code | A03BB01 |
| PubChem | CID: 160883 |
| DrugBank | DB09300 |
| ChemSpider | 16736107 |
| UNII | 2Z3E1OF81V |
| ChEMBL | CHEMBL1256901 |
| Formula | C21H30NO4+ |
| Molecular mass | 360.467 g/mol |
| SMILES[show] | |
| InChI[show] | |