Caffeine is a naturally occurring substance found in tea, chocolate, coffee beans and other plants. The amount of caffeine in tea compared to other drinks is much less than you would think, more than ½ the amount than coffee.

Item

Average
per
serving

Coffee (5 oz. cup)

80mg 

Cola (12 oz. can)

45mg 

Black Tea (2-3g)

40mg 

Oolong Tea (2-3g)

30mg 

Green Tea (2-3g)

20mg 

White Tea (2-3g)

15mg 

Decaf Tea (2-3g)

2mg 

Herbal Tea (2-3g)

0

Decaffeinated tea is not caffeine free.
Herbals are not actually tea as they are mostly made from flowers or other herbs that are caffeine free.

Read “Green Tea Caffeine- Why It’s Better Than Coffee” Julian Tai, 2008 http://www.americanchronicle.com/articles/61042

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