Popular energy drinks promise better athletic performance and weight loss, but do the claims hold up? Not always, say researchers at Nova Southeastern University in Florida.



    "Energy drinks typically feature caffeine and a combination of other ingredients, including taurine, sucrose, guarana, ginseng, niacin, pyridoxine and cyanocobalamin," says Stephanie Ballard, PharmD., assistant professor of pharmacy practice at Nova Southeastern University's West Palm Beach campus.



    "Most of the performance-enhancing effects of energy drinks can be linked to their caffeine content," she says. "Caffeine has been consistently been observed to enhance aerobic performance, although its effects on anaerobic performance may vary."



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