9781422288047

Tea usually contains about half as much caffeine per serving as coffee, depending on the strength of the brew. Certain types of tea, such as black and oolong, contain some- what more caffeine than most other teas.

Soft drinks usually contain about 10 to 50 milligrams of caffeine per serving.

Energy drinks like Red Bull have about 80 milligrams of caffeine per serving.

21