Caffeine

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Caffeine is a stimulant which means it speeds up activity in the brain. Having a lot of caffeine can cause headaches, more trips to the toilet to pass urine, restlessness, muscle twitches, nervousness, high blood pressure, depression, upset stomachs and sleeping problem.

People who use caffeine over a long time can become dependent on it and may get headaches and become tired and cranky when they don’t have it.

This information is from School Drug Department Education WA 2012

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