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Generic Name: Dicyclomine (oral or injection) dicyclomine (oral or injection) dye-SYE-kloe meen [ dye-SYE-kloe-meen]
Names of Brands: Bentyl, Dibent, and Dicyclocot
Dosage Formats: Intramuscular solution (10 mg/mL); capsule for oral use (10 mg); oral syrup (10 mg/5 mL); chewable tablet (20 mg).
The Class of Drug: Anticholinergics and antispasmodics

What is Dicyclomine?

Dicyclomine can be used to treat functional bowel disorders or irritable bowel syndrome.Dicyclomine is also employed for reasons not mentioned in this guideline for medication.

Side effects of Dicyclomine

Contact a medical professional immediately. Get medical attention immediately if you notice symptoms that are warning signs of an allergic response, like hives, trouble breathing, or swelling of your lips, face, and tongue.

Dicyclomine can cause serious adverse side effects. Consult your physician immediately if you experience:

  • Heartbeats that are fast or slow, beating heart beats that pound or flutter inside your chest
  • Insomnia, agitation, hallucinations, strange thoughts or behaviors;
  • Difficulties in speech or memory;
  • Problems with balance or muscular movements;
  • Diarrhea, serious constipation, or a worsening or recurrence of bowel symptoms;
  • Trouble swallowing
  • Swelling, bruising, or pain when an injection of dicyclomine was administered or
  • Dehydration, dizziness, confusion, feeling extremely thirsty, and less urine, as well as sweating.

The confusion and mood changes could be more common among older adults.

Common adverse effects of dicyclomine could be:

  • Drowsiness, dizziness, weakness, and nervousness;
  • Blurred vision
  • Dry mouth
  • Nausea.

This is not a comprehensive list of all the side effects. Other side effects could be present. Contact your doctor to seek medical advice on adverse effects. You can report symptoms to the FDA at 1-800-FDA-1088.


Many medications can interact with dicyclomine. Inform your doctor about your current medications.

Before you Take this Drug

Dicyclomine is not a good choice when you are allergic to dicyclomine or suffer from:

  • Glaucoma;
  • An obstruction in the bladder or other urinary issues;
  • A blockage inside your stomach (stomach and intestines);
  • Serious ulcerative colitis;
  • Gastroesophageal reflux disease (GERD);
  • A serious heart condition that causes active bleeding
  • Myasthenia gravis;
  • If you are nursing a baby.

It is not approved to be used by anyone younger than 18. Dicyclomine should not be Consult your doctor If you've ever had:

  • Heart conditions and hypertension;
  • A stroke;
  • Ulcerative colitis;
  • An ileostomy or colostomy;
  • An increased prostate
  • Kidney or liver disease

Adults who are older may become more susceptible to adverse effects caused by dicyclomine.Consult your physician if you are expecting.Do not breastfeed.

How to take Dicyclomine?

Follow all the instructions on your prescription label and go through all medication guides or instruction sheets. The doctor might alter your dosage.Take the dosage exactly as directed.

Dicyclomine oral tablets are taken by mouth.Take measurements of liquid medicine using the syringe supplied or a dosage-measuring device (not the kitchen spoon).

Dicyclomine injections are given to muscles if you're not in a position to take the medicine orally.Contact your physician if your symptoms don't improve after two weeks.Place it in a cool, dry place free of heat and moisture.

Details on Dosage

Usual Adult Dose for Irritable Bowel Syndrome:

Initial dose: 20 mg taken orally four times per day.
Maintenance dose: up to 40 mg orally every day, four times after a week of the initial dose.
Discontinue the drug if effectiveness is not realized within two weeks or if the side effects are not able to be controlled with doses less than 80 mg daily.
Safety data in the form of documents cannot be found for doses of more than 80 mg daily for durations greater than two weeks.
10-20 mg to 20 mg 4 times per day
Time of treatment: one or two weeks in the event that the patient is unable to consume oral medication.
Comments: Administer injections via IM only.
Uses: Treatment for patients suffering from functional bowel or irritable bowel syndrome

What Happens If I Miss a Dose?

Don't miss your missed dose. you can take your next dose at the time you normally take it. Don't use two doses at once.

What Happens If I Overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line at 1-800-222-1222.

The overdose may cause sickness, nausea, vomiting, diminished pupils, weakness or the loss of motion throughout your body, difficulty eating, fainting, or seizures (convulsions).

What Should be Avoided?

Can cause dizziness and blurred vision. Avoid driving and other hazardous activities until you are aware of the effects of dicyclomine.

Avoid getting dehydrated or too hot during workouts and in hot temperatures. Dicyclomine may cause sweating to decrease and make you more susceptible to suffering from heat stroke. Consult your physician if you are experiencing an increase in fever when you take dicyclomine.

Beware of using an anti-inflammatory. Antacids could make it difficult for the body to accept dicyclomine from your mouth.

Interaction with Other Drugs

When you take dicyclomine along with other drugs that cause drowsiness, this can cause more of it. Talk to your doctor prior to using opioid medications, sleeping pills such as muscle relaxers, or any medication to treat an anxiety disorder as well as seizures.

Discuss with your doctor the medicines you are currently taking. Numerous drugs can affect dicyclomine, specifically:

This is not a complete list, and a variety of other medications could influence dicyclomine. This includes prescription and over-the-counter drugs, vitamins, and products made from herbs. There are many possible interactions between drugs that are listed here.\