Health information to help you understand symptoms. It isn't a diagnosis.
Check symptoms

Dicyclomine

Brand names: Bentyl

Dicyclomine relaxes the muscles of the gut to ease cramping from irritable bowel syndrome.

Brand namesBentyl
Type of medicineAntispasmodic (gut medicine)
Prescription?Prescription
ImportantThis page is general information, not a prescription. Don't start, stop, or change a medicine without talking to your provider or pharmacist.

Overview

It's anticholinergic, so it can cause dry mouth and constipation.

What it's used for

  • Irritable bowel syndrome (IBS) cramping

How to take it

  • Take it before meals, as prescribed.
  • Avoid getting overheated; it lowers sweating.

Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.

Side effects

Common side effects

  • Dry mouth
  • Dizziness
  • Blurry vision
  • Sleepiness
  • Constipation
Call your provider todayCan't pee
Call your provider todayConfusion or seeing things
Call your provider todayEye pain

Warnings

  • Not for babies under 6 months.
  • Not for people with glaucoma, blocked bowels, or severe ulcerative colitis.

Other medicines, foods, and alcohol

  • Other anticholinergic medicines add to side effects.
  • Antacids lower absorption.

Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.

Pregnancy and breastfeeding

Talk with your provider.

Missed doses, overdose, and storage

If you miss a dose

Take it as soon as you remember, unless it's almost time for your next dose. Then skip the missed dose. Don't take two doses at once.

If someone takes too much

Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.

Storing it

Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.

Conditions it's used for

Sources

Last updated 2026-11-13.