loperamide, Imodium A-D, Anti-Diarrheal, TH Anti-Diarrheal, Diamode, Imodium, Kaopectate II, Imodium

  • Medical Author:
    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Jay W. Marks, MD
    Jay W. Marks, MD

    Jay W. Marks, MD

    Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.

Inflammatory Bowel Disease Slideshow Pictures

PRESCRIPTION: Yes, but also OTC

GENERIC AVAILABLE: Yes

PREPARATIONS: Capsules or tablets: 1 or 2 mg; liquid: 1 mg per teaspoonful (5 ml).

STORAGE: Loperamide should be stored at room temperature, 15 C - 30 C (59 F - 86 F).

DOSING: In adults and children 12 years of age and older, the usual dose is 4 mg initially, followed by 2 mg after each loose stool. The maximum dose is 16 mg/day (8 mg if self medicating).

For chronic diarrhea 4-8 mg per day may be administered after control is achieved.

The dose for acute diarrhea in children is: age 8 to 12 years, 2 mg three times the first day; age 6 to 8 years, 2 mg twice the first day; age 2 to 5 years, 1 mg three times the first day. After the first day, children less than 12 years of age usually receive a dose of 0.1 mg/kg after a loose stool.

Chronic diarrhea in children is treated with 0.08-0.24 mg/kg/d divided into two doses, one dose given every 12 hours. For traveler's diarrhea children 6-12 years old receive 2 mg after the first lose stool then 1 mg after each subsequent stool. Children older than 12 receive 4 mg initially then 1 mg after each loose stool.

The maximum daily dose for traveler's diarrhea is 4 mg (6-8 years old), 6 mg (6-12 years old), and 8 mg (>12 years old).

DRUG INTERACTIONS: Cholestyramine (Questran) binds to loperamide in the intestines and prevents its absorption, thereby reducing the effect of loperamide. Therefore, there should be at least a two hour interval between doses of loperamide and cholestyramine. Some drugs which are used to increase propulsion of intestinal contents theoretically could counteract loperamide. Such drugs include bethanechol (Urecholine), cisapride (Propulsid), metoclopramide (Reglan), and erythromycin.

Medically Reviewed by a Doctor on 2/24/2015

Quick GuideInflammatory Bowel Disease (IBD) Causes, Symptoms, Treatment

Inflammatory Bowel Disease (IBD) Causes, Symptoms, Treatment
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