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Bisacodyl (Dulcolax)

Bisacodyl (brand name: Dulcolax) is an over-the-counter stimulant laxative used to relieve occasional constipation or prepare for procedures like colonoscopies. It works by stimulating intestinal muscles, leading to bowel movements within 6 to 12 hours.

Unlike stool softeners such as docusate sodium, bisacodyl triggers active movement in the colon. It’s available in both tablet and suppository forms, depending on your needs.

Wondering how bisacodyl compares to other laxatives like MiraLAX or Colace? Read our blog on Dulcolax vs MiraLAX vs Colace to learn which option might be right for you.

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Bisacodyl (brand name: Dulcolax) is an over-the-counter stimulant laxative used to relieve occasional constipation or prepare for medical procedures like colonoscopies. It works by stimulating the colon, typically producing a bowel movement within 6 to 12 hours.

Unlike stool softeners such as docusate sodium, bisacodyl does not soften the stool—it activates muscle contractions in the intestines. It’s available in both oral tablets and rectal suppositories, giving you flexibility based on how fast you need relief.

Which Bisacodyl Product Is Right for You?

Bisacodyl Tablets (5 mg, Oral)

  • Provides relief within 6 to 12 hours
  • Best taken at bedtime for overnight relief
  • Swallowed whole with water

Bisacodyl Suppositories (10 mg, Rectal)

  • Provides faster relief — usually within 15 to 60 minutes
  • Ideal for quick, daytime relief
  • Inserted rectally for direct stimulation

Need bisacodyl in bulk? Check out our high-count packs for maximum value:

Bisacodyl FAQs

  • Is bisacodyl the same as Dulcolax? Yes. Dulcolax is a brand name. Bisacodyl is the active ingredient in both the brand and generic versions.
  • Is bisacodyl a stool softener? No. It’s a stimulant laxative, not a stool softener like docusate sodium.
  • How fast does bisacodyl work? Tablets work in 6–12 hours. Suppositories usually work within 15 to 60 minutes.
  • Can I take bisacodyl every day? It’s not recommended for daily use without talking to your doctor. Bisacodyl is intended for short-term relief.

How does Bisacodyl work?

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Bisacodyl is a medication commonly used to treat constipation, as well as to prepare the bowel for medical procedures such as colonoscopies. It works by stimulating the muscles in the intestines to contract, leading to increased bowel movements and relief from constipation.

 

Bisacodyl is classified as a stimulant laxative, which means that it stimulates the nerves in the lining of the intestines, causing them to contract more frequently and with greater force. This increased muscle activity helps to move stool through the intestines more quickly and efficiently, leading to bowel movements.

Bisacodyl is also thought to help increase the amount of water and electrolytes in the stool, which can further aid in the movement of stool through the intestines. This can help to soften the stool, making it easier to pass.

 

Bisacodyl is available in a variety of forms, including tablets, suppositories, and enemas. The onset of action can vary depending on the form of the medication, with suppositories and enemas usually acting more quickly than tablets.

 

It is important to note that bisacodyl should be used only as directed by a healthcare provider or as directed on the package label. Overuse of bisacodyl or other laxatives can lead to negative side effects, including dehydration, electrolyte imbalances, and dependence on laxatives for bowel movements. It is also important to maintain a healthy diet and lifestyle to prevent constipation and promote regular bowel movements.