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caffeine
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Diagram of the caffeine molecule, showing colored spheres representing carbon, hydrogen, nitrogen, oxygen atoms, and methyl groups, with labeled bonds and a key for each element. Caffeine Caffeine content of popular drinks.
How Does Caffeine Affect the Human Body and Brain?
Explore the health benefits of coffee consumption
A white woman bites into a chocolate bar.
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caffeine: Media

chemical compound
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Videos

How Does Caffeine Affect the Human Body and Brain?
Learn about caffeine's effects on the human body.
Video: © American Chemical Society (A Britannica Publishing Partner)
Explore the health benefits of coffee consumption
The possible health benefits of coffee consumption.
Video: Science in Seconds (www.scienceinseconds.com) (A Britannica Publishing Partner)
The chemistry of chocolate
Is your favorite sweet good for you?
Video: © American Chemical Society (A Britannica Publishing Partner)

Images

The caffeine molecule
The chemical structure of caffeine.
Encyclopædia Britannica, Inc.
Caffeine
Pure caffeine, in anhydrous form, occurs as a white powder.
William Rafti

Interactives

Caffeine content of popular drinks.
How much caffeine is found in drinks.
Encyclopædia Britannica, Inc.
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