How Efficient Are Energy Drinks?

    Do you sometimes rely on an energy drink to kick your alert level up a notch? New research shows you'll get the same boost, for less money, by drinking coffee.

    FOX News Radio's Steve Knight reports:

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    Several researchers are investigating the drink makers' claims about their products.

    The New York Times reports that the human studies all have a similar conclusion: increases in alertness occur because the drinks have a lot of caffeine. One researcher calls the drinks "caffeine delivery systems". And, they're costly: about $3.00 for a 16-ounce can that has as less caffeine than a cup of Starbucks coffee costing less than $2.00. Or, about the same amount of caffeine as a NoDoz tablet costing $.30.

    Sales of energy drinks in the U.S. last year totaled more than $10 billion.

    Steve Knight, FOX News Radio.