Loperamide
Imodium (loperamide) is a widely-used over-the-counter anti-diarrheal medication that works by slowing down the movement of the intestines, allowing for more water absorption and firmer stools. It is commonly used to treat acute diarrhea, traveler's diarrhea, and can also be prescribed for chronic diarrhea conditions.
Imodium is an anti-diarrheal medication that slows gut movement to reduce the frequency of loose stools.
Key facts at a glance
- RxNorm
- 151889
- Generic
- Imodium
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Imodium is used to treat acute diarrhea (including traveler's diarrhea), reduce the frequency of bowel movements in individuals with ileostomies, and manage chronic diarrhea associated with irritable bowel syndrome (IBS) or inflammatory bowel conditions.
Imodium contains loperamide, an opioid receptor agonist that acts locally in the gastrointestinal tract. It slows intestinal motility by affecting the smooth muscle of the gut, allowing more time for water and electrolytes to be absorbed from stool, resulting in firmer, less frequent bowel movements.
Imodium should not be used if there is blood in the stool or if you have a fever, as this may indicate a bacterial infection that requires different treatment. It is not recommended for children under certain ages without medical supervision. Prolonged use should be avoided and medical advice sought if symptoms persist beyond 48 hours. Those with liver disease should consult a healthcare provider before use.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy