The U.S. Food and Drug Administration (FDA) has issued a public warning about the stimulant dimethylamylamine—or DMAA—that is evidently commonly found in workout-boosting and fat-burning dietary supplement products.

FDA said that as of April 13, 2013, it “had received 86 reports of illnesses and death associated with supplements containing DMAA.” The majority of these were voluntary reports from consumers and healthcare practitioners, FDA indicated, and the illnesses reported include “heart problems and nervous problems or psychiatric problems.” The warning places the United States behind eight other countries that have already banned the stimulant, reported a news source. See, April 16, 2013.