A study in the September Consumer Reports (subscription required) shows that the amount of caffeine found in eight ounces of 12 popular energy drinks ranged from 50 to135mg, with most in the 75 to 80mg range, reports Reuters. That compares to the amount of caffeine in an eight ounce cup of coffee, which ranged from 65 to 120mg, with an average of 85mg, says the National Coffee Association. The study attempts to surprise consumers by proving that many energy drinks have the same caffeine as a similar cup of coffee. What the study didn't highlight, according to Reuters, was exactly how many energy drinks and coffee people consume during a typical day. The likelihood of people drinking only eight ounces of an energy drink, or coffee, is absurdly low.
Visit any Starbucks (NASDAQ: SBUX) or 7-11 store, and consumers will notice that the smallest size cup in most franchises is 12 ounces, and the largest, 24 ounces. Only Dunkin Donuts provides coffee-drinkers with a smaller version.
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