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Its like high-octane fuel for the brain. Its a vitamin. Found in guarana (only good if you want a nice drink, if its only for the vitamin, then its overpricy) but mostly coffee of course. Supplements like No-Doz pills have actually their caffeine from coffee decaffeinator byproducts. Chocolate contains too much calories to be acceptable as source of caffeine. To get the RDA in caffeine if you don't like coffee drink Diet Coke/Pepsi/etc. Useful info now. Caffeine doesn't act like coke or speed! It doesn't act on the same pathway! Actually it mainly blocks the "drowsiness-inducing molecules" a.k.a adenosine from acting. But it doesn't act of dopamine (=feel good) pathway like the other drugs.
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