Dulcolax
Dulcolax is a tablet that contains Bisacodyl 5 mg. Bisacodyl is a stimulant laxative: relieves constipation, usually within 6 to 12 hours.
| Ingredient (salt) | Amount |
|---|---|
| Bisacodyl | 5 mg |
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.
Common questions
What is Dulcolax?
Dulcolax is a tablet containing Bisacodyl 5 mg.
What is Dulcolax used for?
Relieves constipation, usually within 6 to 12 hours.
How should I take Dulcolax?
Adults: 5 to 10 mg at bedtime, swallowed whole (do not take within 1 hour of antacids or milk). Short-term use only. Always follow the dose your doctor or the pack gives.
What are the side effects of Dulcolax?
Common side effects include: Stomach cramps, diarrhoea, nausea. Get medical help straight away for: Rectal bleeding, severe stomach pain, constipation that lasts despite treatment.
Does Dulcolax need a prescription?
It is usually sold without a prescription in India, but ask a pharmacist if you take other medicines or have a long-term illness.
Can I take Dulcolax in pregnancy or while breastfeeding?
Use only if diet and fibre fail; short use is generally acceptable. Considered fine while breastfeeding.
What are the substitutes for Dulcolax?
We have no other brand with exactly the same composition and strength in our list yet. Ask your pharmacist for an equivalent.
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.
Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.
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