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Hyoscine butylbromide

Medication antispasmodic digestive
Aka: Buscopan, scopolamine butylbromide
Brands seen in Singapore: Buscopan, Dhacopan, Spasmoliv, Hyomide, Fucon
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Stomach and gut cramps, IBS cramping pain, period pain
When to take
When cramps occur · NHS: 2 weeks max unless a doctor says
Take with
With or without food · swallowed whole with water
Pros & cons
Pros
  • NHS: most people get no or only minor side effects
  • Tablets sit at the pharmacy counter in SG, no script
  • Does not usually upset the stomach (NHS)
Cons
  • Dry mouth, constipation, blurred vision in >1 in 100
  • NHS: not longer than 2 weeks without a doctor
  • The injection is prescription-only in SG
Sources
  1. NHS — Buscopan (hyoscine butylbromide), A-Z medicines (reviewed 13 May 2025) · read 2026-08-27
    what it says
    “Buscopan (hyoscine butylbromide) … Find out how Buscopan treats stomach cramps, irritable bowel syndrome and period pain and how to take it.”
  2. NHS — How and when to take Buscopan (reviewed 13 May 2025) · read 2026-08-27
    what it says
    “Each Buscopan tablet contains 10mg … 1 tablet, taken 3 times a day increased to 2 tablets, taken 4 times a day if needed … Do not take Buscopan for longer than 2 weeks unless your doctor tells you to”
  3. NHS — Who can and cannot take Buscopan (reviewed 13 May 2025) · read 2026-08-27
    what it says
    “have a rare type of glaucoma called acute angle closure glaucoma … have myasthenia gravis … a condition where your bowel is blocked … are 40 years old or over … are pregnant, trying to get pregnant or breastfeeding”
  4. NHS — Side effects of Buscopan (reviewed 13 May 2025) · read 2026-08-27
    what it says
    “most people have no side effects or only minor ones … Dry mouth … Constipation … Blurred vision … happen in more than 1 in 100 people … a painful red eye with loss of vision”
  5. HSA Register of Therapeutic Products (data.gov.sg d_767279312753558cbf19d48344577084) — hyoscine butylbromide rows, forensic classification · read 2026-08-27
    what it says
    “SIN03574P · BUSCOPAN TABLET 10 mg · HYOSCINE BUTYLBROMIDE · ORAL · Pharmacy Only … SIN07796P · FUCON INJECTION 20 mg/ml · INTRAVENOUS · Prescription Only”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.