Table 2 Caffeine content of common beverages and supplements

Coffee [1, 7]

  Brewed from grounds, prepared with water (/8 fluid ounces)

95–333

  Brewed, espresso, restaurant-prepared (/1 fluid ounce)

64

  Instant, regular, powder (/8 fluid ounces)

62.7–99

  Decaffeinated, brewed or instant (/8 fluid ounces)

2–35

  Espresso (/1 fluid ounce)

47–64

  Cola (/8 fluid ounces) [1]

24–46

Chocolate (/100 g) [6]

  100 % cocoa

240

  55 % cocoa

124

  33 % cocoa

45

  Energy drinks (/8 fluid ounces) [1]

27–164

Caffeine contained tea (/1 serve) [1]

  Brewed black (/8 fluid ounces)

25–48

  Brewed green (/8 fluid ounces)

25–29

  Ready-to-drink, bottled (/8 fluid ounces)

5–40