[Skip to Navigation]
Sign In
December 24, 1973

Adverse Effect of Lomotil Therapy in Shigellosis

Author Affiliations

From the Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore. Dr. DuPont is now at the Program in Infectious Diseases and Clinical Microbiology, University of Texas Medical School, Houston.

JAMA. 1973;226(13):1525-1528. doi:10.1001/jama.1973.03230130013006

Twenty-five men with induced shigellosis received a mixture of diphenyoxylate hydrochloride with atropine (Lomotil), placebo and oxolinic acid (Oxabid), or a second placebo in four randomly assigned treatment groups. Diarrhea was decreased by oxolinic acid or Lomotil therapy, while fever was prolonged in the group receiving only Lomotil. Two men who received Lomotil alone had fever until the drug regimen was discontinued five days later. Shigellae were eradicated from stool in four of six men treated with oxolinic acid alone, but in only one of six men receiving oxolinic acid and Lomotil.

Lomotil may be contraindicated in shigellosis. Diarrhea may represent a defense mechanism when disease is caused by a bacterial pathogen that must penetrate the intestinal epithelium to produce illness where increased intestinal motility (diarrhea) may decrease contact time between the invasive bacteria and mucosal cells.

Add or change institution