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Deaths tied to 5-hour Energy under investigation

| Thursday, Nov. 15, 2012, 6:38 p.m.

The Food and Drug Administration said on Thursday that it is investigating 13 reports of deaths and 33 hospitalizations linked to 5-hour Energy, the highly caffeinated shots that are often sold in convenience stores.

The news emerges a month since Monster Energy drinks were linked to five deaths in FDA's adverse-event reports.

Energy shots come with a “higher risk of health problems,” says Amelia Arria, a University of Maryland public health epidemiologist who has written several energy-drink studies.

“The caffeine concentration is a lot higher because the volume of the liquid is lower,” Arria said. “Concentration is the issue, really.”

The FDA does not regulate caffeine in energy drinks, which can be marketed as dietary supplements. Sen. Richard Blumenthal, D-Conn., said he is concerned about natural ingredients that also act as stimulants in the drinks. Experts say this combination can be risky for people with undiagnosed heart conditions.

Soft drinks, on the other hand, are regulated and can have no more than 71.5 milligrams of caffeine in a 12-ounce serving.

Because they don't know how much caffeine is in energy drinks, “consumers may be at risk for caffeine toxicity,” said Laura Juliano, an American University associate professor of psychology who is an expert on cognitive and behavioral mechanisms that influence caffeine.

Symptoms of caffeine toxicity, which is also called caffeine intoxication, range from nervousness to cardiac arrhythmia. There have also been reports of seizures, psychotic symptoms and death from energy drinks, Juliano says.

Even when energy-drink companies do list the amount of caffeine, testing by Consumer Reports magazine found that many drinks contain more caffeine than is listed on their labels, says health editor Gayle Williams. Five of the drinks they tested had “an amount of caffeine more than 20 percent above what was on the label,” she says.

“We tell people ‘read the label,' but if the labels are inaccurate, that's really not helping you,” Williams said. “It's very difficult to recommend these because people don't necessarily know what they're getting. And in some cases not knowing what you're getting can be potentially fatal.”

Consumer Reports says 5-hour Energy has 212 milligrams of caffeine, though the drink does not list the amount of caffeine it contains. For comparison, an 8-ounce cup of coffee typically contains about 100 milligrams of caffeine. A 16-ounce Starbucks Grande contains 330 milligrams.

Monster Beverage doesn't list the amount of caffeine in its products. The company told Consumer Reports that's because there are no laws or business regulations requiring them to and that the numbers wouldn't matter to most consumers anyway because their products are safe.

The existence of an adverse-event report “does not necessarily mean that the product identified in the report actually caused the adverse event,” the FDA said in a statement. “If we find a relationship between consumption of the product and harm, the FDA will take appropriate action to reduce or eliminate the risk.”

FDA cautioned consumers they should consult with their doctors before drinking energy drinks “to ensure that there are no underlying or undiagnosed medical conditions that could worsen as a result of using them.”

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