What it is used for
- Stomach and gut cramps
- Cramping pain from irritable bowel syndrome (IBS)
- Period-related and bladder cramps
- Spasm during some medical procedures
How it works
Hyoscine butylbromide relaxes the smooth muscle of the gut and other organs, relieving the painful squeezing and cramping that cause colicky discomfort.
How it is taken
Comes as tablets and an injectable form used in healthcare settings. The tablets are taken by mouth. Take it exactly as the label or your clinician directs, and do not use it continuously for unexplained ongoing pain without assessment.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- Dry mouth
- Blurred vision
- Constipation
- Fast heartbeat
- Difficulty passing urine
Serious effects — get help
- Severe eye pain or sudden vision changes (possible acute glaucoma)
- Inability to pass urine
- Fast or irregular heartbeat with chest discomfort
- Severe allergic reaction
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Other antimuscarinic medicines (some antidepressants, certain bladder and Parkinson's drugs) — added dry mouth, constipation, etc.
- Medicines affecting heart rate
Who should take care
- Avoid or use with caution if you have glaucoma, an enlarged prostate or urinary retention, or certain heart conditions
- Tell your clinician about bowel narrowing or severe constipation
- Discuss pregnancy and breastfeeding with a pharmacist
- Severe or persistent abdominal pain needs medical assessment, not just an antispasmodic