Sources of Caffeine

Coffee / Caffeine (mg)

  • Coffee, brewed, 8 oz / 100 to 200 mg

  • Coffee, instant, 8 oz / 27 to 173 mg

  • Espresso, 1 oz / 75 mg

Decaffeinated coffee has 97% of its caffeine removed.

Tea / Caffeine (mg)

  • Tea, brewed, 8 oz / 40 to 120 mg

Caffeine content depends upon the type of tea.

Other / Caffeine (mg)

  • Cola, 12 oz / 35 mg

  • Chocolate bar, 1.55 oz / 9 mg

  • Energy drinks, supplements, and pain medicine vary depending on brand. Check the label or with the manufacturer for exact amounts of caffeine.