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©2013 UpToDate ® Print Email Caffeine source and amount* Source Caffeine (mg) Coffee (generic brewed; 8 ounces) Drip (8 ounces) 95-200 Regular instant (8 ounces) 27-173 Decaffeinated instant (8 ounces) 2-12 Espresso (1 -2 oz) 45-100 Decaffeinated espresso (1 ounces) 0-20 Starbucks grande (16 oz) 330 Cocoa and chocolate Cocoa from mix (6 ounces) 9 (3-12) Milk chocolate (1 ounce) 6-9 Baking chocolate (1 ounce) 35 Soft drinks (12 ounces) ** Dr. Pepper 41 Regular cola 35-45 Diet cola 35-55 Tea (8 ounces) 1 minute brew 9-33 3 minute brew 40-120 Instant 12-28 Canned iced tea (12 ounces) 22-36 * It is important to remember that these figures are approximate and vary among products. In addition, different types of beans and teas have different caffeine contents, and the way the beverage is brewed also affects the caffeine content. ** US FDA limit for cola and Dr. Pepper soft drinks is 71 mg.