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Caffeine is a , '''mateine''' when found in Mate , and '''theine''' when found in Tea ; all these names are considered chemical synonyms for the same chemical compound (cf ChemId Plus). Caffeine is found in varying quantites in the Bean s, Leaves , and Fruit of over 60 Plants , where it acts as a natural Pesticide that Paralyze s and kills certain Insect s feeding on the plants. It is most commonly consumed by humans in infusions extracted from the Bean s of the Coffee Plant and the leaves of the Tea Bush , as well as from various foods and drinks containing products derived from the Kola Nut or from Cacao . Other sources include Yerba Mate , Guarana berries, and the Yaupon Holly . In humans, caffeine is a Central Nervous System (CNS) Stimulant , having the effect of temporarily warding off Drowsiness and restoring alertness. Beverages containing caffeine, such as Coffee , Tea , Soft Drink s and Energy Drink s enjoy great popularity; caffeine is the world's most widely consumed Psychoactive Substance , but unlike most other psychoactive substances, it is legal and unregulated in nearly all jurisdictions. In North America, 90% of adults consume caffeine daily.1 The U.S. Food and Drug Administration lists caffeine as a "Multiple Purpose Generally Recognized as Safe Food Substance".2 SOURCES |
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