Caffeine, also known as theine, is found in many foods, and acts as a stimulant and a mild diuretic. Caffeine was discovered in 1819 by the German chemist Friedlieb Ferdinand Runge.

He named it “Kaffein” as a chemical compound in coffee, which in French became “caffeine”. Caffeine is found in the seeds, leaves and fruits of different plants. Very popular drinks contain caffeine such as coffee, tea and mate. It is also found in some sodas and energy drinks based on cola nut derivatives, which contain large amounts. Cocoa also contains a little. Caffeine is particularly present in the seeds of coffee and guarana as well as in the leaves of yerba mate and tea.

Due to its presence in plants other than coffee or for advertising reasons, it is sometimes called “theine“, “guaranine” or, even, “matéine“. However, it is the same molecule, with the crude formula C8H10N4O2, with the same effects even if it is not consumed alone or in the same way and that it is not present at the same concentration as in coffee.

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