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THIS IS CAFFEINE CAFFEINEWEBSTERS WEBSTERS Unabridged Dictionary gives the following definition of caf ¬ feine A feebly basic alkaloid G8 H 10 O2 N4 crystallizing a with one molecule of water in colorless needles and occurring in coffee In tea theine in guarana guaranine in cola etc It is used in medicine as a cerebral and cardiac stimulant and as a diuretic Chemlcallj it belongs to the uric acid group being 1 3 7trimethyl xanthine The diuretic properties of caffeine are the reason for its presence in virtually all kidney remedies used for horses