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Sports Supplement Linked to Cardiac Issues, Death

By Lisa Collier Cool

The Army is investigating a popular workout booster ingredient called dimethylamylamine (DMAA) and its potential link to the deaths of two soldiers at US military bases. Americans spend more than $100 million a year on sports supplements containing DMAA, which is also known as “geranium extract” because it can supposedly be found in Chinese geraniums.

“This is the most dangerous ingredient sold today in supplements in the United States,” Dr. Pieter Cohen, an internist at Harvard Medical School, told NPR.

Among the products that contain DMAA—a powerful stimulant—are Jack3d, advertised on the GNC website as providing “ultra-intense muscle-gorging strength, energy, power & endurance,” and OxyElite Pro.

DMAA has been banned by the World Anti-Doping Agency, the National Collegiate Athletic Association, and Major League Baseball, but is still sold at GNC, the Vitamin Shoppe, and other stores.

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