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Line 1: − + − Chemical formula: 3,7-dihydro-1,3,8-trimethyl-1H-purine-2,6,-dione OR 1,3,7-trimethylxanthine </ref> − in the world. People consume caffeine in [[coffee]], [[tea]], [[cocoa]], [[chocolate]], [[soft drink]]s, and some drugs. The source of caffeine is either the coffee bean, the tea leaf, the elusive kola nut, or the cacao pod. Pure caffeine is odorless and has a bitter taste. − Caffeine is a central nervous system [[stimulant]]. In moderate doses, caffeine may:+ + Line 14:
Line 13: − In superbly massive doses, caffeine is lethal. A fatal dose of caffeine has been calculated to be more than 10 grams (about 170 mg/kg body weight) - this would be equivalent to drinking 80 to 100 cups of coffee in rapid succession - a feat only [[Voltaire]] is alleged to have achieved.+
moderate silly tone
'''Caffeine''' is the most popular [[drug]]<ref>
'''Caffeine''' is a central nervous system [[stimulant]] found in [[coffee]], [[tea]], [[cocoa]], [[chocolate]], [[soft drink]]s, and some drugs. The source of caffeine is either the coffee bean, the tea leaf, the [[kola]] nut, or the [[cacao]] pod. Pure caffeine is odorless and has a bitter taste.
==Caffeine effects==
==Caffeine effects==
In moderate doses, caffeine may:
* Increase alertness
* Increase alertness
* Reduce fine motor coordination
* Reduce fine motor coordination
* Promotes diuresis
* Promotes diuresis
Like all drugs, it can be over-used. A fatal dose of caffeine has been calculated to be more than 10 grams (about 170 mg/kg body weight) - this would be equivalent to drinking 80 to 100 cups of coffee in rapid succession - a feat only [[Voltaire]] is alleged to have achieved.
Caffeine enters the bloodstream through the [[stomach]] and [[small intestine]] and can have its effects as soon as 15 minutes after it is consumed. Once in the body, caffeine will stay around for hours: it takes about 6 hours for one half of the caffeine to be eliminated.
Caffeine enters the bloodstream through the [[stomach]] and [[small intestine]] and can have its effects as soon as 15 minutes after it is consumed. Once in the body, caffeine will stay around for hours: it takes about 6 hours for one half of the caffeine to be eliminated.