Active Ingredient

Bisacodyl

Bisacodyl is a medication used to relieve constipation. It helps stimulate bowel movements, making it easier to pass stools.

It is often used in situations where a quick relief from constipation is needed, such as before medical procedures or examinations.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Bisacodyl Brands

Dulcolax

Strengths 5mg

Bisacodyl Uses

Bisacodyl is commonly used for treating constipation and preparing the bowel for medical procedures.

Relief from occasional constipation
Bowel preparation before surgery
Bowel preparation before colonoscopy
Management of bowel irregularities

How Bisacodyl Works

Bisacodyl works by stimulating the muscles in the intestines, which helps to move stool through the bowel. This action increases the movement of the intestines, helping to produce a bowel movement.

It belongs to a class of drugs known as stimulant laxatives, which are specifically designed to treat constipation by increasing bowel activity.

Common side effects of Bisacodyl

Not everyone will experience side effects from Bisacodyl, and many are mild and temporary.

Abdominal cramps
Nausea
Diarrhea
Dizziness
Rectal irritation

If you experience serious or persistent symptoms, contact your doctor for advice.

Do not use Bisacodyl if you have severe abdominal pain, nausea, or vomiting.
Avoid taking it with antacids or milk, as it may affect the drug’s effectiveness.
Limit alcohol consumption while using this medication.
If you notice any unusual changes in bowel habits, consult your doctor.
Do not use for more than a few days unless directed by a healthcare professional.

Always consult your doctor or healthcare provider before starting any new medication.

Frequently Asked Questions

How long does it take for Bisacodyl to work?

Bisacodyl typically works within a few hours. The exact time can vary based on individual response.

Can I use Bisacodyl every day?

Bisacodyl is not intended for long-term use. Consult your doctor if you need to use it frequently.

Are there any foods I should avoid while taking Bisacodyl?

Avoid taking Bisacodyl with milk or antacids, as these can interfere with its effectiveness.

Is Bisacodyl safe during pregnancy?

Consult your doctor before using Bisacodyl during pregnancy to ensure it is safe for you.

Can Bisacodyl cause dehydration?

Bisacodyl may cause diarrhea, which can lead to dehydration. Drink plenty of fluids while using this medication.