Buscopan contains hyoscine butylbromide as its active component. It is categorized under digestive health as an antispasmodic agent and is available in a 10 mg pill formulation. In Hong Kong, Buscopan is a prescription-only medication regulated by the Department of Health.
Hyoscine butylbromide is a quaternary ammonium antimuscarinic that blocks muscarinic receptors in the smooth muscle of the gastrointestinal (GI) tract. By preventing acetylcholine from stimulating these receptors, the drug relaxes abnormal GI muscle contractions, reducing spasm-related pain. Because the molecule is poorly absorbed from the gut, its action is largely confined to the GI tract, limiting systemic side effects. Onset of relief typically occurs within 15-30 minutes, with a duration of action of 4-6 hours.
Buscopan is approved in Hong Kong for the short-term relief of abdominal discomfort associated with:
It is intended for adult patients who experience intermittent, painful GI spasms. Use in children is generally limited to specific cases and must be guided by a pediatric specialist.
Absolute contraindications
Relative contraindications
Special populations
This article provides educational information about Buscopan and is not a substitute for professional medical advice. Treatment decisions, including use for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.
Buscopan’s antispasmodic action can alleviate smooth-muscle cramps, and some clinicians prescribe it off-label for dysmenorrhea. However, this use is not approved in Hong Kong, and patients should discuss risks and benefits with their healthcare provider before using it for menstrual pain.
A typical Buscopan 10 mg tablet is round, white to off-white, and may bear a distinct imprint such as “B10” on one side. Appearance can vary by manufacturer, so always verify the imprint against the packaging.
Hyoscine butylbromide is not listed on the World Anti-Doping Agency (WADA) prohibited substances list. Routine drug screens for performance-enhancing substances generally do not detect Buscopan, but athletes should still check specific competition regulations.
Yes, Buscopan can be carried in your hand luggage. Keep it in its original container with a pharmacy label, and have a copy of the prescription if asked by security personnel.
Plain hyoscine (scopolamine) crosses the blood-brain barrier and is used for motion sickness and nausea, whereas hyoscine butylbromide (Buscopan) is a quaternary compound that remains largely peripheral, targeting GI smooth-muscle spasm without central nervous system effects.
Antacids containing magnesium or aluminum can delay the absorption of Buscopan. To avoid interaction, separate the doses by at least two hours.
If symptoms are severe and you have missed your scheduled dose, you may take a 10 mg tablet, provided you have not exceeded the daily maximum of 30 mg. If you are unsure, contact your pharmacist for guidance.
Hyoscine butylbromide does not have a known impact on glucose metabolism, making it generally safe for patients with diabetes. Nonetheless, monitor blood sugar as you would with any new medication.
Herbal supplements with anticholinergic properties, such as belladonna or certain nightshade extracts, could enhance anticholinergic side effects. Inform your provider about all herbal and over-the-counter products you use.
Most Buscopan tablets have an expiration date of 24 to 36 months from the date of manufacture. Always check the printed expiry on the package and do not use the medication past that date.
