article in the Telegraph
"Naomi Haynes, 14, became so dependent on the drinks that she would spend all her money on them and even borrow from friends to fund the habit.
"The drinks made me happy and I got a great buzz from them, but then I would feel tired and unhappy so I would have another drink to pick me up," said Miss Haynes, of East Cowes, Isle of Wight.
It got to the stage where she would smuggle them into class to stop her from falling asleep.But she says she has now been warned by doctors that her addiction could lead to a heart attack."
"A spokesman for Red Bull said: "One 250 ml can of Red Bull Energy Drink contains about the same amount of caffeine as a cup of coffee, which is 80mg. The consumption of Red Bull Energy Drink should therefore correspond to a person’s intake of coffee and the same is true for children. We do not recommend Red Bull Energy Drink to caffeine sensitive individuals including children."