Price: one tea bag costs as little as 2p. A bargain
Form: found in coffee, tea, chocolate, soft drinks such as 7-Up and cola.
Also used in over-the-counter pick-me-ups such as Pro-Plus
Duration of high: up to four hours.
Legal status: legal in all its forms
History: Coffee was first imported into England in 1601 and in tea 1661.
Initially both were sold as medicines
Highs: caffeine is a mild stimulant which can be used to help you remain
awake and alert.
Lows: the caffeine high can keep you awake at night, make sensitive people
tetchy and can also cause heartburn and upset stomachs. It also raises
blood pressure and should not be drunk by people with high blood pressure.
Heavy users can develop caffeine dependency.
Tips: try dunking a biscuit in your cup of tea. It's very tasty.
