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'''Caffeine''' (3,7-dihydro-1,3,8-trimethyl-1H-purine-2,6,-dione OR 1,3,7-trimethylxanthine), is the most popular drug 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''' (3,7-dihydro-1,3,8-trimethyl-1H-purine-2,6,-dione OR 1,3,7-trimethylxanthine), is the most popular [[drug]] 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 and your Nervous System==

==Caffeine and your Nervous System==