Taste the extreme. Quench your thirst with the bold, delicious, sweet citrus flavor of sugar-free Diet Mountain Dew®. With more caffeine than average, it's perfect for active individuals who might need an energy boost at a crucial moment. Whether for its flavor or for its boost, this diet, calorie-free refreshment is made for enjoyment. Beverage Type: Soft Drink; Flavor: Diet Mountain Dew; Product Packaging: Can; Volume Capacity: 12 oz.