Tea

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Listed below are the caffeine values for different types of tea.

Caffeine content of tea

Product Serving size Caffeine in mg's Source

Loose-leaf Tea (imported) Black

-

25-110 

USDNS

Loose-leaf Tea (imported) Oolong

-

12-55 

USDNS

Loose-leaf Tea (imported) Green

-

8-36

USDNS

Black Tea brewed 1 min.

5 ounces

21-33

USDNS

Black Tea brewed 3 min.

5 ounces

35-46 

USDNS

Black Tea brewed 5 min.

5 ounces

39-50 

USDNS

Canned iced tea

5 ounces

22-36 

USDNS

Iced tea

12 ounces

67-76 

USDNS

Instant tea

5 ounces

22-36 

USDNS

 

  • *USDNS-United States Department of Nutritional Services
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