Each can contains the same amount of caffeine as a cup of coffee The use of Red Bull and other energy drinks by schoolchildren is becoming a growing problem.

He claimed high consumption could even cause chest pains and headaches and warned school nurses to be on the lookout for such problems.

But a spokeswoman for Red Bull said the drink was not recommended for children.

Mr Tait said that during his work going into schools he had talked to pupils who were drinking too many energy drinks, the Nursing Standard magazine reported.

THE ENERGY DRINK EFFECT
Energy drinks such as Red Bull have the equivalent amount of caffeine as a cup of coffee Caffeine acts as a stimulant, relieving tiredness But having too much can give you the shakes and headaches and make you feel anxious Overuse has also been linked to high blood pressure and even heart palpatations

School nurses need to be aware of the symptoms, including headaches and restlessness.

Warning came after a school in West Sussex banned Red Bull being consumed on the grounds after staff reported an increase in bad behaviour.

But the National Union of Teachers said they were not aware of energy drink consumption causing a widespread problem.

Each can of Red Bull contains about the same amount of caffeine as a cup of coffee.

The makers say it can improve performance and boost concentration, but was not necessarily aimed at children.