Tuesday, February 9, 2010
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Bentyl Oral

Precautions and Side Effects


Generic Name: DICYCLOMINE - ORAL
Pronounced: (dye-SYE-klo-meen)

Bentyl Oral Side Effects

Table of Contents

Drowsiness, dry mouth, dizziness, blurred vision, dry eyes, tiredness, and trouble sleeping may occur. Less common side effects may also include lightheadedness, nausea, vomiting, headache, loss of appetite, temporary loss of the ability to taste, constipation, abdominal bloating/pain, problems sleeping, unusually fast heartbeat, and stuffy nose. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

To relieve dry mouth, suck on (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute. To relieve dry eyes, consult your pharmacist for an appropriate eye lubricant.

To prevent constipation, maintain a diet adequate in fiber, and drink plenty of water. If you become constipated while using this drug, tell your doctor immediately.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

  • decreased sweating
  • sudden fast/irregular heartbeat
  • speaking problems
  • mental/mood changes (e.g., confusion, unusual behavior, aggressive behavior, excitability, nervousness)
  • problems starting the flow of urine
  • shortness of breath
  • decreased sexual ability
  • diarrhea if you have a colostomy or ileostomy


A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:

  • rash
  • itching/swelling (especially of the face/tongue/throat)
  • severe dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.

In Canada, you may report side effects to Health Canada at 1-866-234-2345.

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