Hyoscine butylbromide Pediatric Dose Calculator
Age-based hyoscine butylbromide dosing for children, with maximum doses, age limits and sources. Enter age and weight for the dose in mg and syrup mL or tablets.
Pediatric dosing
Abdominal smooth-muscle spasm (oral)
Hyoscine butylbromide dose chart by age and weight
Abdominal smooth-muscle spasm (oral). Weights are WHO/IAP reference medians for age — always dose on the measured weight.
| Age | Weight | Dose (mg) | Syrup 5 mg/5 mL (where available) | Frequency |
|---|---|---|---|---|
| 6 years | 19 kg | 10 mg | 10 mL | Three times daily |
| 8 years | 24.4 kg | 10 mg | 10 mL | Three times daily |
| 10 years | 31.1 kg | 10 mg | 10 mL | Three times daily |
| 12 years | 39.4 kg | 10 mg | 10 mL | Three times daily (may increase to 20 mg four times daily) |
Strengths in the calculator
- Coated tablet 10 mg (Oral — do not split)
- Syrup 5 mg/5 mL (where available) (Oral)
Different strength on your bottle? Use “Different strength on the bottle?” under the result.
Safety
Contraindications and cautions
- Glaucoma, myasthenia gravis, megacolon, mechanical GI obstruction, tachyarrhythmia.
Pregnancy and breastfeeding
Legacy FDA category C. Limited data — avoid unless clearly needed.
Minimal oral absorption; probably compatible.
Clinical notes
Rule out a surgical abdomen before treating pain. Very low oral bioavailability — injectable doses are not interchangeable with oral doses.
Adult and adolescent (≥40 kg) dose
10–20 mg — Three times daily (max 20 mg four times daily) (max 20 mg per dose, 80 mg per day).
Other names and brands
Also known as Butylscopolamine, Scopolamine butylbromide.
- India: Buscopan
- UK: Buscopan
Brand examples only — products and strengths vary by country. Always check the label.
Frequently asked questions
What is the hyoscine butylbromide dose for children?
Abdominal smooth-muscle spasm (oral): 6 years to <12 years: 10 mg per dose · three times daily; ≥12 years: 10–20 mg per dose · three times daily (may increase to 20 mg four times daily) · max 80 mg/day. Usual duration: Short course. Always use the child's measured weight and check the strength on the bottle.
How many mL of syrup 5 mg/5 mL (where available) for a 19 kg child?
For abdominal smooth-muscle spasm (oral), a 19 kg child (about 6 years) needs 10 mg per dose — 10 mL of Syrup 5 mg/5 mL (where available), three times daily. Recalculate with the child's actual weight.
From what age can hyoscine butylbromide be given?
Age range in PediaRx: ≥6 years – adult. The calculator does not calculate a dose below 6 years. Each indication can have its own age and weight limits, shown with its regimen.
Is hyoscine butylbromide safe in pregnancy?
Legacy FDA category C. Limited data — avoid unless clearly needed.
Sources and editorial process
- BNF for Children — Hyoscine butylbromide — NICE / BMJ Group / Royal Pharmaceutical Society
- Buscopan — Summary of Product Characteristics — electronic Medicines Compendium (UK)
Dosing data last updated 2026-09-27. PediaRx is built and maintained by Dr. Shounak Pal, MBBS (Medical Officer, Government of West Bengal, India — founder and developer of PediaRx). Every regimen is encoded with explicit units, maximum doses and age/weight limits and is checked by automated tests before publication. Report an error: hello@pediarx.com.
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Clinical disclaimer: reference tool for qualified health professionals. Verify every dose against current guidance and the product label before prescribing.
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