Caffeine

Caffeine is a natural vegetal alkaloid found in the leaves, in the seeds and in the fruit of more than 63 species of plants in the world. Each cup of coffee contains on average from 50 to 120 mg, depending on the blend and on the method used to prepare the beverage.

One of the most renown effects of caffeine is its influence on the central nervous system producing a temporary stimulation that eases physical and intellectual activity. It also stimulates breathing, cardiovascular and digestive centers and it increases diuresis, thus easing the elimination of toxins.

Caffeine does not induce dependence. However, a sudden interruption of coffee consumption may in some cases cause headaches, tiredness and somnolence for one or two days. Sensitive persons, persons suffering from hypertension and pregnant women should, nevertheless, drink moderate amounts of it.

As stated by the EUFIC (European Food Information Council), a moderate consumption of caffeine for an adult corresponds to 300mg per day. The chart below shows the amount of caffeine contained in some of the most widespread modes of consumption of a cup of coffee.

 

Average quantity per cup
Soluble coffee	75mg per 190ml
Filter (American) coffee	85mg per 190ml
espresso	30-50 mg per 30 ml cup