| 1 | Beverages (tea, instant, unsweetened, powder) | 5710 mg |
| 2 | Beverages (coffee, instant, regular, powder) | 3140 mg |
| 3 | Beverages (tea, instant, sweetened with sodium saccharin, lemon-flavored, powder) | 2240 mg |
| 4 | Beverages (coffee, instant, with chicory) | 2060 mg |
| 5 | Beverages (tea, instant, lemon, unsweetened) | 1790 mg |
| 6 | Beverages (coffee, instant, regular, half the caffeine) | 1570 mg |
| 7 | Candies (dark chocolate coated coffee beans) | 839 mg |
| 8 | Candies (milk chocolate coated coffee beans) | 800 mg |
| 9 | Beverages (coffee, instant, mocha, sweetened) | 360 mg |
| 10 | Cocoa (dry powder, unsweetened) | 230 mg |
| 11 | Beverages (coffee, brewed, espresso, restaurant-prepared) | 212 mg |
| 12 | Beverages (tea, instant, decaffeinated, unsweetened) | 169 mg |
| 13 | Beverages (tea, instant, lemon, with added ascorbic acid) | 124 mg |
| 14 | Beverages (coffee, instant, decaffeinated, powder) | 122 mg |
| 15 | Chocolate (dark, 60-69% cacao solids) | 86 mg |
| 16 | Baking chocolate (unsweetened, squares) | 80 mg |
| 17 | Chocolate (dark, 70-85% cacao solids) | 80 mg |
| 18 | Cocoa (dry powder, unsweetened, processed with alkali) | 78 mg |
| 19 | Cocoa (dry powder, hi-fat or breakfast, processed with alkali) | 72 mg |
| 20 | Candies (sweet chocolate) | 66 mg |
| 21 | Candies (semisweet chocolate) | 62 mg |
| 22 | Candies (semisweet chocolate, made with butter) | 62 mg |
| 23 | Beverages (tea, instant, decaffeinated, lemon, diet) | 57 mg |
| 24 | Beverage (instant breakfast powder, chocolate, sugar-free, not reconstituted) | 52 mg |
| 25 | Baking chocolate (unsweetened, liquid) | 47 mg |
| 26 | Candies (chocolate, dark, nfs (45-59% cacao solids 90%; 60-69% cacao solids 5%; 70-85% cacao solids 5%)) | 47 mg |
| 27 | Chocolate (dark, 45- 59% cacao solids) | 43 mg |
| 28 | Beverages (coffee, brewed, prepared with tap water) | 40 mg |
| 29 | Beverages (energy drink with carbonated water and high fructose corn syrup) | 38 mg |
| 30 | Beverages (coffee, brewed, breakfast blend) | 37 mg |
| 31 | Beverages (malted drink mix, chocolate, powder) | 37 mg |
| 32 | Beverages (tea, instant, lemon, sweetened, powder) | 35 mg |
| 33 | Beverages (cocoa mix, low calorie, powder, with added calcium, phosphorus, aspartame, without added sodium or vitamin a) | 34 mg |
| 34 | Beverages (the coca-cola company, nos energy drink, original, grape, loaded cherry, charged citrus, fortified with vitamins b6 and b12) | 34 mg |
| 35 | Beverages (the coca-cola company, nos zero, energy drink, sugar-free with guarana, fortified with vitamins b6 and b12) | 34 mg |
| 36 | Beverages (energy drink, full throttle) | 33 mg |
| 37 | Beverages (energy drink, monster, fortified with vitamins c, b2, b3, b6, b12) | 33 mg |
| 38 | Beverages (energy drink, rockstar) | 33 mg |
| 39 | Beverages (energy drink, rockstar, sugar free) | 33 mg |
| 40 | Beverages (energy drink, sugar free) | 32 mg |
| 41 | Beverages (energy drink, amp) | 31 mg |
| 42 | Beverages (energy drink, amp, sugar free) | 30 mg |
| 43 | Beverages (energy drink, red bull, sugar free, with added caffeine, niacin, pantothenic acid, vitamins b6 and b12) | 30 mg |
| 44 | Beverages (monster energy drink, low carb) | 30 mg |
| 45 | Candies (mars snackfood us, milky way midnight bar) | 30 mg |
| 46 | Candies (nestle, crunch bar and dessert topping) | 30 mg |
| 47 | Beverages (energy drink, red bull) | 29 mg |
| 48 | Beverages (coffee, ready to drink, milk based, sweetened) | 28 mg |
| 49 | Alcoholic beverage (liqueur, coffee, 53 proof) | 26 mg |
| 50 | Alcoholic beverage (liqueur, coffee, 63 proof) | 26 mg |