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By means of comparison, a 7 oz cup of coffee has the following caffeine (mg) amounts, according to Bunker and McWilliams in J. Am. Diet. 74:28-32, 1979: Drip 115-175 Espresso 100mg of caffeine 1 serving (1.5-2oz) Brewed 80-135 Instant 65-100 Decaf, brewed 3-4 Decaf, instant 2-3 Tea, iced (12 ozs.) 70 Tea, brewed, imported 60 Tea, brewed, U.S. 40 Tea, instant 30 Mate 25-150mg http://www.cs.uwaterloo.ca/~alopez-o/Coffee/caffaq.html#HowMuchCaff
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