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Bisacodyl

Bisacodyl 12 Suppository

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What is Bisacodyl?

Bisacodyl is a medication used to treat constipation and to help empty the bowels before surgery or medical procedures. It works by stimulating the intestines to promote bowel movements.

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What is Bisacodyl ?

Bisacodyl is a medication used to treat constipation and to help empty the bowels before surgery or medical procedures. It works by stimulating the intestines to promote bowel movements.

Source: MedlinePlus, U.S. National Library of Medicine

  • Lightheadedness or fainting.
  • Nausea or vomiting.
  • Bleeding from your rectum.
  • Dark, tarry stools.
  • Sweating or seizures (especially in children or older adults).
  • Tell your doctor if your constipation does not improve after using this medicine for 1 week.
  • Make sure your doctor knows if you have any type of stomach or intestinal (bowel) problems. These may include diverticulitis, intestinal blockage, rectal bleeding, or moderate to severe stomach pain.
  • Sweating or seizures (especially in children or older adults).
  • Nausea or vomiting.
  • Lightheadedness or fainting.
How long does it take for bisacodyl to work?
It depends on the form. Oral bisacodyl tablets usually produce a bowel movement overnight, so they are often taken at bedtime. Rectal suppositories work much faster, typically within a short time after use. Follow the directions on the package or from your provider.
What is bisacodyl (Dulcolax) used for?
Bisacodyl, the generic form of Dulcolax, is used for short-term relief of occasional constipation and irregularity. It is also used to empty the bowels before a colonoscopy, surgery, or other procedures, often as part of a bowel-prep regimen. It comes as oral tablets and rectal suppositories.
Is it safe to take bisacodyl every day?
No. Bisacodyl is intended for occasional, short-term use, not daily or long-term use. Overusing it can lead to laxative dependence, electrolyte imbalance, and loss of normal bowel function. If you feel you need a laxative every day or your constipation lasts, talk to your provider.
Why can't you take bisacodyl with milk or antacids?
The oral tablets have a special enteric coating designed to stay intact until they reach the intestine. Milk, dairy, and antacids can make that coating dissolve too early, which can cause stomach or abdominal cramps. For that reason, do not take bisacodyl within 1 hour of milk, dairy, or antacids.
What are the side effects of bisacodyl?
Common side effects include abdominal cramping, stomach discomfort, nausea, and diarrhea. Rectal suppositories can also cause burning or irritation. Stop and seek care if you have rectal bleeding or fail to have a bowel movement after using it, as these can be signs of a more serious condition.
How much does Bisacodyl cost without insurance?
The price of Bisacodyl without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save up to 25% off retail prices with a free Rx.com coupon.
What are the common side effects of Bisacodyl?
Common side effects of Bisacodyl may include: Lightheadedness or fainting., Nausea or vomiting., Bleeding from your rectum., Dark, tarry stools., Sweating or seizures (especially in children or older adults).. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Bisacodyl?
Generic versions may be available for Bisacodyl. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Bisacodyl on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Bisacodyl?
The cheapest pharmacy for Bisacodyl depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Bisacodyl near you.

Bisacodyl Coupons & Prices

Bisacodyl 12 Suppository

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Bisacodyl is an over-the-counter stimulant laxative used for short-term relief of occasional constipation and to clean out the bowels before a colonoscopy or surgery. It is the generic form of Dulcolax and is also sold under names like Correctol, Fleet Bisacodyl, and Alophen. Even though you can buy it without a prescription, a free Rx.com bisacodyl coupon can lower the checkout price at the pharmacy counter, especially for larger tablet counts or when your provider writes it as part of a bowel-prep regimen. Enter your ZIP above to see today's price at pharmacies near you.

What is bisacodyl and how does it work?

Bisacodyl is a stimulant laxative. It works directly on the muscles of the intestinal wall, prompting the bowel to contract and move stool along, which produces a bowel movement. It comes as oral tablets with a special enteric (protective) coating and as rectal suppositories.

It is intended for short-term relief of occasional constipation and irregularity. It is also widely used to empty the bowels before a colonoscopy, surgery, or other medical procedures, often combined with other products as part of a bowel-prep regimen your provider directs. Oral tablets usually work overnight, while rectal suppositories tend to act much faster.

How to save on bisacodyl with an Rx.com coupon

Bisacodyl is inexpensive and sold over the counter, but prices still vary a lot from one pharmacy to another, and store-brand versions can cost more than you expect for higher tablet counts. Because bisacodyl is sometimes prescribed as part of a colonoscopy or surgery bowel prep, a free Rx.com discount coupon can bring the cash price down at the register on both the OTC product and any prescribed version.

To find the lowest price, enter your ZIP code above to compare today's cost at pharmacies near you, then show the Rx.com coupon at the counter. There is no membership or insurance required, and you can use the coupon whether you are buying it off the shelf or filling a prescription your provider wrote.

Bisacodyl vs. other laxatives

Bisacodyl is one of several types of laxatives, and the right choice depends on your situation. As a stimulant laxative, it acts more directly than a stool softener or an osmotic product, which is why it is often chosen for quick relief or bowel prep.

  • Senna is another stimulant laxative that works in a similar way.
  • Docusate is a stool softener that makes stool easier to pass rather than stimulating the bowel.
  • Polyethylene glycol and magnesium citrate are osmotic laxatives that draw water into the bowel, and both are commonly used for colonoscopy prep.
  • Lactulose is a prescription osmotic laxative used for constipation and certain other conditions.

This is general information, not medical advice. Ask your pharmacist or provider which laxative fits your needs, particularly for bowel prep before a procedure.

Safety and side effects

Bisacodyl is meant for occasional, short-term use, not for daily or long-term use. Overusing laxatives can lead to dependence (a "laxative habit"), electrolyte imbalance, and loss of normal bowel function. Do not take the oral tablets within 1 hour of milk, dairy, or antacids, because these can dissolve the protective coating too early and cause stomach or abdominal cramps.

Do not use bisacodyl if you have abdominal pain, nausea, or vomiting, if you may have a bowel obstruction, or if you have had a sudden change in bowel habits lasting more than 2 weeks, without first talking to your provider. Stop and seek care if you have rectal bleeding or fail to have a bowel movement after use, as these can signal a more serious condition. Common side effects include abdominal cramping, stomach discomfort, nausea, diarrhea, and rectal burning or irritation with the suppositories. This is not a complete list; ask your pharmacist or provider with any questions.

Sources & accuracy

This Bisacodyl information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Bisacodyl on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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