Bentyl (Dicyclomine)

Bentyl is used for treating symptoms of irritable bowel syndrome. It may also be used for other conditions as determined by your doctor.

Bentyl is an anticholinergic. It works by blocking a chemical in the smooth muscle of the stomach and intestines, causing them to relax, which reduces cramping.

Do not use Bentyl if:

• you are allergic to any ingredient in Bentyl;
• you have blockage of the esophagus, stomach, intestine, or urinary tract;
• you have heart problems due to severe bleeding;
• you have glaucoma;
• you have inflammation of the esophagus due to acid reflux, loss of strength in the intestinal muscles, or chronic inflammation and ulceration of the bowel;
• you have myasthenia gravis (a condition in which the muscles become progressively paralyzed);
• you are breast-feeding.

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you have chronic inflammation or ulcers of the bowel, diarrhea, enlargement of the prostrate, hiatal hernia, kidney or liver disease, a nervous system disease, overactive thyroid, or urinary blockage or retention
• if you have heart disease, heart failure, a history of rapid heartbeat, or high blood pressure.

• Amantadine, antiarrhythmics (eg, quinidine), antihistamines (eg, diphenhydramine), benzodiazepines (eg, diazepam), monoamine oxidase inhibitors (MAOIs) (eg, phenelzine), narcotic pain medicine (eg, meperidine), nitrates (eg, nitroglycerin, isosorbide), nitrites (eg, sodium nitrite), phenothiazines (eg, chlorpromazine), sympathomimetics (eg, pseudoephedrine), or tricyclic antidepressants (eg, amitriptyline) because they may increase the risk of Bentyl 's side effects
• Metoclopramide or phenothiazines (eg, chlorpromazine) because their effectiveness may be decreased by Bentyl
• Digoxin because the risk of its side effects may be increased by Bentyl.

Check with your doctor if any of these most common side effects persist or become bothersome:

• blurred vision; constipation; decreased sweating; difficulty sleeping; dizziness; drowsiness; dry mouth; headache; lightheadedness; loss of taste; nausea; nervousness.

• Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); agitation; confusion; diarrhea; difficulty focusing your eyes; difficulty moving; difficulty speaking; difficulty urinating; disorientation; exaggerated sense of well-being; fainting; hallucinations; pounding in the chest; rapid heartbeat; short-term memory loss; unusual weakness; vomiting.

Bentyl is to be used only by the patient for whom it is prescribed. Do not share it with other people.
If your symptoms do not improve or if they become worse, check with your doctor.