Sonic Rainbow Slush: nutrition and allergens
The Rainbow Slush at Sonic has 310 calories, 0 g fat, 83 g carbohydrate, 0 g protein and 50 mg sodium, according to Sonic’s nutrition information.
Nutrition facts
| Calories | 310 |
|---|---|
| Total fat (g) | 0 0% |
| Saturated fat (g) | 0 0% |
| Trans fat (g) | 0 |
| Cholesterol (mg) | 0 0% |
| Sodium (mg) | 50 2% |
| Total carbohydrate (g) | 83 30% |
| Dietary fiber (g) | 0 0% |
| Total sugars (g) | 81 |
| Protein (g) | 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 item. 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, one serving is high in carbohydrate (30%) and 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 Rainbow Slush.
| Milk | Not listed |
|---|---|
| Egg | Not listed |
| Fish | Not listed |
| Crustacean shellfish | Not listed |
| Tree nuts | Not listed |
| Peanuts | Not listed |
| Wheat | Not listed |
| Soy | Not listed |
| Sesame | Not listed |
| Gluten | Not 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.
Other items in Limited Time Only at Sonic
By calories, the Rainbow Slush ranks 5 of 9 in Sonic’s Limited Time Only section, from lowest to highest.
| Item | Calories |
|---|---|
| Shark BiteMini | 120 |
| Cocoberry CreamMini | 150 |
| Banana Dirty Dr Pepper16 oz | 180 |
| Fruited Dragon SlushMini | 180 |
| Rainbow Slush | 310 |
| Banana Pudding Cream SlushSmall | 390 |
| Banana Pudding BlastMini | 400 |
| Banana Pudding ShakeMini | 430 |
| Strawberry Cheesecake Cream SlushMini | 460 |
Nutrition for all 9 items in Limited Time Only at Sonic
Browse the Sonic menu by goal: high-protein items · low-calorie items
Sources
- 1 Sonic, Sonic Nutritional Information brochure (national) Covers nutrition and menu · Summer 2026 · Checked 8 Oct 2026
- 2 Sonic, Sonic Allergen Information guide Covers allergens · National Summer 2026 Allergen Guide · Checked 8 Oct 2026
Spotted a value that differs from the chain’s current information? Report it