Caffeine is an alkaloid that is produced by the leaves, seeds or fruits of around 60 different plants.

Caffeine penetrates the cells of the organism and its main effect is stimulation.

 

A daily dose of caffeine, for example in the form of 2 to 3 cups of coffee, alleviates the symptoms of tiredness and fatigue, activates the mental faculties and revitalises the body.

 

However, excessive amounts of caffeine can have side effects such as palpitations, restlessness, insomnia, high blood pressure and indigestion.