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Sonic Mountain Dew: nutrition and allergens

Sonic lists the Mountain Dew in 5 sizes, from 110 calories (Wacky Pack!) to 460 calories (RT 44). The Wacky Pack! has 0 g fat, 27 g carbohydrate, 0 g protein and 35 mg sodium.

Values converted by script from official files; text drafted with AI assistance From Sonic’s nutrition information Last checked How pages are made
Glass of fizzy cola with ice cubes against a dark background
Illustrative photo, not Sonic’s product · Pexels · About our photos

Nutrition facts

Mountain Dew nutrition facts by size
Per servingWacky Pack!SmallMediumLargeRT 44
Calories 110170210340460
Total fat (g) 0 0%0 0%0 0%0 0%0 0%
Saturated fat (g) 0 0%0 0%0 0%0 0%0 0%
Trans fat (g) 00000
Cholesterol (mg) 0 0%0 0%0 0%0 0%0 0%
Sodium (mg) 35 2%50 2%65 3%105 5%140 6%
Total carbohydrate (g) 27 10%44 16%55 20%88 32%121 44%
Dietary fiber (g) 0 0%0 0%0 0%0 0%0 0%
Total sugars (g) 27445588121
Protein (g) 0 0%0 0%0 0%0 0%0 0%

Percentages are the share of the FDA Daily Value for adults and children 4 and over, worked out from Sonic’s published amounts (how % Daily Value works). A dash means Sonic does not publish that value for this size. Not published for this item: added sugars.

Using the FDA’s rule of thumb that 5% of the Daily Value or less per serving is low and 20% or more is high, the Wacky Pack! size is low in sodium, fat, saturated fat, cholesterol, dietary fiber and protein. Add it up with other items in the Sonic nutrition calculator.

Optional item that may not be available at all locations.

Allergens

Sonic’s allergen information lists none of the allergens it reports for the Mountain Dew.

Allergens reported by Sonic for the Mountain Dew
MilkNot listed
EggNot listed
FishNot listed
Crustacean shellfishNot listed
Tree nutsNot listed
PeanutsNot listed
WheatNot listed
SoyNot listed
SesameNot listed
GlutenNot listed

Sonic relies on its suppliers for allergen information and shares cooking and preparation areas, so it says it cannot rule out cross-contact or promise that any item is free of an allergen, and no item is certified gluten-free, vegetarian or vegan. Blended drinks and frozen desserts share tools, fried foods share fryers, and grilled items share the grill. Buns, Texas Toast, eggs, grilled onions and grilled peppers are cooked with a bun oil that contains soy. Some breads come from local bakeries, so ingredients and allergens such as sesame can differ by restaurant. Tell your carhop about any food allergy before ordering. Items marked as fried carry a risk of cross-contact with all allergens.

Filter the whole Sonic menu by allergen

Other items in Soft Drinks at Sonic

By calories (Wacky Pack!), the Mountain Dew ranks 24 of 25 in Sonic’s Soft Drinks section, from lowest to highest. The table shows the 9 items nearest to it; each item is compared at its first listed size.

Nearby items in Soft Drinks at Sonic by calories
ItemCalories
SpriteWacky Pack! 70
Sun DropWacky Pack! 80
Mug Root BeerWacky Pack! 90
StarryWacky Pack! 90
PepsiWacky Pack! 100
Tropicana LemonadeWacky Pack! 100
Hawaiian PunchWacky Pack! 110
Mountain DewWacky Pack! 110
Tropicana StrawberryWacky Pack! 130

Nutrition for all 25 items in Soft Drinks at Sonic

Browse the Sonic menu by goal: high-protein items · low-calorie items

Sources

  1. 1
    Sonic, Sonic Nutritional Information brochure (national) Covers nutrition and menu · Summer 2026 · Checked 8 Oct 2026
  2. 2
    Sonic, Sonic Allergen Information guide Covers allergens · National Summer 2026 Allergen Guide · Checked 8 Oct 2026

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