Jolt caffeinated gum, 1 stick 33 milligrams
Hershey’s Special Dark chocolate bar, 1.45 ounces 18 milligrams
Coca-Cola Classic, 12 ounces 35 milligrams
Diet Coke, 12 ounces 47 milligrams
Brewed black tea, 8 ounces 47 milligrams
Vault soda, 12 ounces 70.5 milligrams
Starbucks Tazo Chai Tea Latte, 12 ounces
75 milligrams
Red Bull, 8.3 ounces 76 milligrams
Brewed coffee, 8 ounces 95 milligrams
Excedrin Extra Strength, 2 tablets
130 milligrams
NoDoz Maximum Strength, 1 tablet
200 milligrams
Starbucks grande-sized coffee, 16 ounces 330 milligrams
Source: mayoclinic.com
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