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Antidiarrheals for Irritable Bowel Syndrome - Topic Overview

Antidiarrheal medicines, such as atropine and diphenoxylate (such as Lomotil) and loperamide (such as Imodium), slow intestinal movements. This allows stool to stay in the intestine longer, allowing more water to be absorbed, which makes the stool formed rather than watery when it is passed. Antidiarrheals can help with diarrhea in IBS.1

Atropine and diphenoxylate may cause dry skin, itching, dizziness, drowsiness, nausea, or vomiting. Psychological dependence may occur in high doses.

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Loperamide may cause abdominal (belly) pain, dry mouth, nausea, vomiting, or dizziness. These side effects are usually minor and do not last long. This medicine may not help people who have alternating periods of diarrhea and constipation, because it may make the constipation worse.

These medicines may be dangerous if they are used by people who have certain types of intestinal infections or who have inflammatory bowel disease. You should not use these medicines if you have a fever or if you have blood in your stool.

See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)

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WebMD Medical Reference from Healthwise

Last Updated: April 26, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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