How Caffeine Works?

This video describes how caffeine works. But what is caffeine? Caffeine (also spelled caffein) is a bitter, white crystalline xanthine alkaloid that is a psychoactive stimulant drug. Caffeine was discovered in 1820 by a German chemist, Friedlieb Ferdinand Runge, and in 1821 by French chemists working independently; viz., by Robiquet and by Pelletier and Caventou. It was Pelletier who coined the word "cafeine," whence "caffeine".

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Tags: How Caffeine Works

Uploaded by: ( Send Message ) on 23-11-2010.

Duration: 1m 10s