I already talked about it in a previous post but coffee and tea are not in the same boat regading caffeine.

Here are two charts comparing average caffeine levels for various brews.

Graphique caféine caffeine graphic

There are two main differences between tea and coffee regarding caffeine :

  • Quantity of caffeine is more important in coffee
  • Absorbtion is different, caffeine in coffee is totally bioavailable and thus will be quicker in the blood stream

More: http://www.caffeineinformer.com/