caffein :

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caffein


  • n  a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects

  • Health officials are seeing increases in students' abuse of caffeine and video-game playing.
  • Researchers have consistently found that caffeine won't keep you from getting drunk.
  • A new spate of drinks that mix alcohol and caffeine, marketed largely to kids, are raising public-health alarms.

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