Caffeine: n. Caffeine is an alkaloid present in coffee (1 to 2%), tea (1,5 to 3%) and kola nuts (2 to 3%), which has stimulating properties, tonics and diuretics.
Caffeine infuses especially in the first three minutes. Absorbed in excess, caffeine can become toxic.
Caffeine can be addictive. In some people, it causes, even in moderate doses, palpitations, greater nervousness, sleep disturbances, headaches and...
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