atropine (oral, Atreza, Sal-Tropine - discontinued in the US)

  • Pharmacy 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.

GENERIC NAME: oral atropine (no longer available in the United States)



DRUG CLASS AND MECHANISM: Atropine belongs to a class of medications known as anticholinergics or antimuscarinics. Atropine occurs naturally and is extracted from the belladonna alkaloid plant. Atropine works by blocking the actions of a chemical called acetylcholine. Atropine has numerous uses in clinical medicine and is available in several dosage forms including oral tablet, solution for injection, ophthalmic solution, and ophthalmic ointment. Oral atropine is no longer available in the US.

Atropine produces many effects in the body, including reducing stomach or intestinal spasms, reducing the production of saliva, mucus, and other bodily secretions, and maintaining proper heart rhythm.

PRESCRIBED FOR: Atropine (oral) is used to decrease the production of saliva and phlegm (mucus) in people with an excess of saliva (sialorrhea) and to control stomach or intestinal spasms.


In rare cases, serious allergic reactions including swelling of the lips, tongue or face, difficulty breathing, hives, and closing of the throat has occurred.

Medically Reviewed by a Doctor on 10/15/2015

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