Bisacodyl
Bisacodyl is a stimulant laxative found in 1 medicine sold in India, such as Dulcolax. Below: what it is for, how it works, how to take it, side effects, interactions and pregnancy advice.
What it is used for
Relieves constipation, usually within 6 to 12 hours.
How it works
A stimulant laxative that makes the bowel muscle squeeze harder. Tablets work in 6 to 12 hours; suppositories in 15 to 60 minutes.
How to take it
Adults: 5 to 10 mg at bedtime, swallowed whole (do not take within 1 hour of antacids or milk). Short-term use only.
Common side effects
- Stomach cramps
- Diarrhoea
- Nausea
Get medical help straight away if
- Rectal bleeding
- Severe stomach pain
- Constipation that lasts despite treatment
Be careful
For short-term use; can cause cramps.
Other medicines and interactions
Antacids and milk can make the coating dissolve too early and cause cramps. Long use can lower potassium, especially with diuretics or steroids.
Pregnancy and breastfeeding
Use only if diet and fibre fail; short use is generally acceptable. Considered fine while breastfeeding.
Brands of Bisacodyl (1)
Common questions
What is Bisacodyl used for?
Relieves constipation, usually within 6 to 12 hours.
How does Bisacodyl work?
A stimulant laxative that makes the bowel muscle squeeze harder. Tablets work in 6 to 12 hours; suppositories in 15 to 60 minutes.
How should I take Bisacodyl?
Adults: 5 to 10 mg at bedtime, swallowed whole (do not take within 1 hour of antacids or milk). Short-term use only.
What are the side effects of Bisacodyl?
Common: Stomach cramps, diarrhoea, nausea. Get help straight away for: Rectal bleeding, severe stomach pain, constipation that lasts despite treatment.
Does Bisacodyl interact with other medicines?
Antacids and milk can make the coating dissolve too early and cause cramps. Long use can lower potassium, especially with diuretics or steroids.
Is Bisacodyl safe in pregnancy and breastfeeding?
Use only if diet and fibre fail; short use is generally acceptable. Considered fine while breastfeeding.
Does Bisacodyl need a prescription in India?
It is usually sold without a prescription in India, but ask a pharmacist if you take other medicines or have a long-term illness.
Which brands contain Bisacodyl?
Dulcolax.
Sources and further reading
- Bisacodyl: NHS · MedlinePlus
NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.
Last reviewed 31 October 2026. Written by Satya Babu from standard prescribing information.
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