As you have likely observed, caffeine is readily available in a variety of products:
Gu, Vanilla, 1 oz: 20 mg
Diet Coke, 12 oz: 30 mg
Espresso, 1 oz shot: 40 mg
Jolt gum, 1 piece: 40 mg
Pepsi, 12 oz can: 45 mg
Dexatrim diet pill: 52 mg
Excedrine, 1 tab: 5 mg
Red Bull, 8 oz can: 80 mg
Starbucks, 16 oz: 200 mg
NoDoz max, 1 tab: 200 mg
