Article: Energy drinks 'need caffeine alert on cans'; Best-seller: Red Bull energy drink.

Byline: David Derbyshire

THE latest generation of fizzy energy drinks contain so much caffeine they should be forced to carry health warnings, scientists say today.

Some 'performance drinks' contain the caffeine equivalent of at least ten cans of cola.

The warning comes amid concern about the health effects of energy drinks. Earlier this month, drugs experts warned caffeine dependency was causing disruption and concentration problems in classrooms.

Britain's best-selling energy drink, Red Bull, contains around 80mg of caffeine - the equivalent of a strong cup of filter coffee.

Relentless - made by Coca-Cola - comes in a 500ml ...

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