caffeine (thing)

• The lethal dose of caffeine for the average adult is somewhere around 10 grams (between 50 and 200 cups of coffee). This also has a lot to do with tolerance levels.
• Caffeine has a bitter flavor. Barq's Root Beer adds caffiene as a flavouring agent for it's "bite".
• A UPI article states "A major study has found fewer suicides among coffee drinkers ..."

structural formula for caffeine:

     H   H
      \ /
  H -- C        O     H   H
        \      //      \ /
         N -- C         C -- H
        /      \       /
  O == C        C --- N
        \      //      \
         N -- C -- N == C -- H
        /            
  H -- C       caffeine     
      / \      (C8H10N4O2)
     H   H