Almost Too Caffeinated
Only three non-coffee beverages rival the amount of caffeine in one 12 fl oz can of Mountain Dew which already has a whopping 55 milligrams. In order of most to least, Red Bull contains 80mg with Jolt coming in close second with 71.2 mg. Pepsi One comes in third with 55.5mg. Originally Mountain Dew contained more caffeine but during production, it would crystalize to the point of forming into slivers of ice that threatened to burst through the bottles.