Fulfill flavor sticks enhance your bottled water with vitamins including B, C and E vitamins, but no sugar, calories or carbohydrates. B vitamins help metabolize carbs and fats into energy. Vitamins C and E are antioxidants. Each sugar-free stick is formulated to flavor a half-liter bottle of water. Does not affect the color of the water. Slip Fulfill flavor sticks into backpacks, book bags and gym bags and then add to your bottled water anywhere.