- Wikipedia: Caffeine
Article about caffeine includes information on the history, effects, pharmacology, and extraction methods of pure caffeine.
en.wikipedia.org/wiki/Caffeine
- How Caffeine Works
Explains how caffeine affects the body.
www.howstuffworks.com/caffeine.htm
- Caffeine Archive
Devoted to caffeine and those of us who imbibe, brew, relish, and just plain love it.
www.caffeinearchive.com
- Vivarin (Caffeine)
From GlaxoSmithKline. About vivarin, an over-the-counter caffeine tablet used to restore mental alertness or wakefulness when experiencing fatigue or drowsiness.
www.vivarin.com
- Pro Plus
From Roche Products. Relieves temporary tiredness.
www.proplus.co.uk
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