Mountain Dew is a toxic mix of sugar, artificial flavors, and high-fructose corn syrup, all bound together with a cocktail of preservatives and artificial colors. You'd be hard-pressed to find a single recognizable ingredient in this chemical concoction. Don't confuse it with a drink, call it what it is: trash.
Why trash
46 grams of high-fructose corn syrup, brominated vegetable oil, and Yellow 5. Not food.
Try instead
Carbonated water with lemon, lime, or grapefruit.