Loperamide is a drug used to treat
diarrhea. It is available as a prescription and a nonprescription product.
Interactions with Vitamins, Herbs, and Foods
In some cases, an herb or supplement may appear in more than one category, which may seem
contradictory. For clarification, read the full article for details about the summarized
|Depletion or interference
|Side effect reduction/prevention
An asterisk (*) next to an item in the summary indicates that the
interaction is supported only by weak, fragmentary, and/or contradictory scientific
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Interactions with Foods and Other Compounds
Loperamide may cause drowsiness or dizziness.1 Alcohol may intensify these effects
and increase the risk of accidental injury. To prevent problems, people taking loperamide
should avoid alcohol.
1. Threlkeld DS (ed). Gastrointestinal Drugs, Antidiarrheals, Loperamide
HCl; in Facts and Comparisons Drug Information. Facts and Comparisons, St. Louis, MO,
August 1993, 324b–4c.
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