Caffeine

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Caffeine is a white, crystalline, bitter alkaloid, usually derived from coffee or tea. It is also used in medicine chiefly as a nervous system stimulant[1].

Resources

Peters, Josef M. (1967), "Factors Affecting Caffeine Toxicity: A Review of the Literature". The Journal of Clinical Pharmacology and the Journal of New Drugs (7): 131–141.

Notes

  1. Dictionary Definition, Caffeine, Mirriam Webster Online, Accessed 24-January-2010