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Dulcolax 5mg Tablets are a trusted, gastro-resistant stimulant laxative for occasional constipation. Take at night and expect relief the following morning — gentle, predictable, and easy to dose.
Dulcolax 5mg Tablets contain bisacodyl, a trusted stimulant laxative used for the short-term relief of occasional constipation. Each tablet is gastro-resistant (enteric-coated), meaning the coating protects the tablet from stomach acid so it passes through the stomach intact and only dissolves once it reaches the intestine, where it’s needed.
Bisacodyl works by stimulating the muscles of the bowel, encouraging the natural movement that pushes stool through, while also helping retain water in the intestine to soften the stool. The laxative effect typically occurs 6 to 12 hours after taking, giving you a predictable bowel movement the following morning.
The enteric coating stops the tablet from breaking down too early in the stomach, which could reduce its effectiveness or cause stomach irritation. This is why it’s important not to take it with milk, antacids, or indigestion remedies at the same time — these reduce stomach acidity and can cause the coating to dissolve before the tablet reaches the intestine.
Always swallow tablets whole with a full glass of water — don’t crush or chew them, as this bypasses the protective coating entirely.
Speak to your pharmacist first if you are pregnant or breastfeeding, taking other laxatives, or taking antacids, indigestion remedies, or proton pump inhibitors — timing matters with this medicine.
If laxatives are needed every day, or for more than 5 consecutive days, or if you have persistent abdominal pain or notice blood in your stool, stop and consult your doctor.
“Dulcolax Tablets are a good, predictable option for people who want to know roughly when relief is coming — take it at night, and you can expect things to happen the next morning. The one thing people often miss is the timing around milk and antacids; taking them too close together can stop the coating from working properly. I always tell people to take it well away from food or anything that reduces stomach acid, and to start with the lowest dose.” — Anne Harty, Ballyduff Pharmacy
How long does it take to work?
Typically 6 to 12 hours. Taking them at night means most people experience relief the following morning.
Why can’t I take them with milk or antacids?
The gastro-resistant coating is designed to dissolve in the intestine, not the stomach. Milk, antacids, and indigestion remedies reduce stomach acidity, which can cause the coating to break down too early and reduce effectiveness.
Can I crush or chew the tablets?
No. Always swallow whole with plenty of fluid. Crushing or chewing destroys the protective coating.
What’s the right dose to start with?
Start with one tablet at night, and increase to two only if necessary.
What’s the difference between tablets, liquid, and suppositories?
Tablets and liquid both take around 6–12 hours and are best taken at night. Suppositories work much faster — usually within 10–30 minutes — making them better suited to same-day relief.
Can children take this?
No. Dulcolax 5mg Tablets are not suitable for children or adolescents under 18.
How long can I take it for?
Short-term, occasional use only. If you need it for more than 5 days in a row, or have persistent abdominal pain or notice blood in your stool, stop and speak to your doctor.
Dulcolax 5mg Tablets are a licensed General Sales List (GSL) Medicine. Always read the patient information leaflet included in the pack. If symptoms persist beyond 5 days, or you experience severe abdominal pain or blood in your stool, stop use and consult your doctor. This page does not replace professional medical advice.
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