Washington - Federal health officials are investigating sometimes-deadly overdoses with common anti-diarrhea drugs, a bizarre manifestation of the nation’s drug abuse problem.

The primary ingredient in prescription Imodium and similar over-the-counter drugs is intended to control diarrhea. But abusers sometimes try to achieve heroin-like highs by taking massive doses, up to 300 milligrams at once, according to cases in the medical literature. Recommended doses range between 8 milligrams and 16 milligrams per day.

The Food and Drug Administration warned doctors and patients Tuesday that the drugs can cause potentially deadly heart problems when taken at higher-than-recommended levels. The agency has received 31 reports of people hospitalized due to the heart problems, including 10 deaths over the last 39 years. The agency’s database is not comprehensive and many drug overdoses are not reported to the government.

But national poison centers reported a 71 percent increase in calls involving loperamide-containing drugs between 2011 and 2014, according to a journal article published last month in the Annals of Emergency Medicine.... Read More: VIN