How do anti-diarrheal and gas medications work?

Bismuth subsalicylate (Pepto-Bismol, Kaopectate) helps to treat diarrhea by influencing how fluid is absorbed by intestines; it may also reduce inflammation and stop the growth of certain bacteria.
Loperamide (Imodium, Kaopectate) treats diarrhea, but by a different method; it slows the movement of fluid through your intestines so that more fluid is absorbed.

Simethicone (Gas-X, Mylanta Gas) helps control excess gas by allowing bubbles in the stomach and intestines to come together more easily, so your body can expel them quickly and with less distress.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.