A 12-ounce can of regular Mountain Dew contains 54 milligrams of caffeine, which CaffeineInformer.com considers to be a moderate to high amount. Mountain Dew is known for its high level of caffeine and sugar; one 16-bottle of Mountain Dew contains more sugar than two Snickers bars.
PepsiCo produces and distributes Mountain Dew. The original version of Mountain Dew has a significantly higher caffeine level than Coca-Cola, a common competitor. Some special editions of Mountain Dew have had even higher levels of caffeine including Voltage, Kick Start and Game Fuel. There is a caffeine-free Mountain Dew option within the United States and a few other countries. Some countries exclusively have caffeine-free versions of Mountain Dew.