Zaxbys Root Beer (Barq’s): Coca-Cola fountain drink. The official Zaxbys guide lists 160 to 540 calories across 4 options, and it lists none of the nine major allergens. Below are the full nutrition facts, allergens and how it compares with similar items.
Quick answers
- How many calories are in the Barq’s Root Beer?
- 160 to 540 calories depending on the option, per the official Zaxbys guide.
- What allergens does it list?
- None of the major allergens, MSG or gluten are marked, but cross-contact is possible.
What it is
Coca-Cola fountain drink.
Zaxbys Root Beer (Barq’s) sizes and options
Barq’s Root Beer comes in 4 options: Kidz, Small, Medium and Large. Calories run from 160 (Kidz) to 540 (Large), a gap of 380 calories. The full nutrition facts for every option are in the table below.
| Option | Calories | Protein | Sodium | Allergens |
|---|---|---|---|---|
| Kidz | 160 | 0 g | 70 mg | None listed |
| Small | 270 | 0 g | 115 mg | None listed |
| Medium | 400 | 0 g | 170 mg | None listed |
| Large | 540 | 0 g | 230 mg | None listed |
Full nutrition facts
| Option | Calories | Total fat | Sat. fat | Trans fat | Cholesterol | Sodium | Carbs | Fiber | Sugars | Protein |
|---|---|---|---|---|---|---|---|---|---|---|
| Kidz | 160 | 0 g | 0 g | 0 g | 0 mg | 70 mg | 40 g | 0 g | 40 g | 0 g |
| Small | 270 | 0 g | 0 g | 0 g | 0 mg | 115 mg | 67 g | 0 g | 67 g | 0 g |
| Medium | 400 | 0 g | 0 g | 0 g | 0 mg | 170 mg | 101 g | 0 g | 101 g | 0 g |
| Large | 540 | 0 g | 0 g | 0 g | 0 mg | 230 mg | 134 g | 0 g | 134 g | 0 g |
Nutrition at a glance
For the lightest option (Kidz), the official guide lists:
- 160 calories, 0 g fat, 40 g carbs (40 g sugar)
- 70 mg sodium, about 3% of the 2,300 mg FDA daily value
Sugar climbs quickly with size: the Large lists 134 g of sugar.
That’s close to the middle of the drinks list, where the typical item has about 160 calories in its smallest serving.
Allergens
The official guide marks none of the nine major allergens, MSG or gluten for Barq’s Root Beer. That doesn’t make it allergen-free: Zaxbys kitchens use shared equipment, so cross-contact is possible.
How it compares
Here’s Barq’s Root Beer next to 3 similar items, so you can see where it sits.
| Item | Calories | Options | Allergens | Example price |
|---|---|---|---|---|
| Barq’s Root Beer | 160–540 | 4 | None listed | — |
| Coca-Cola | 160–530 | 4 | None listed | $2.29 |
| Fanta Strawberry | 160–530 | 4 | None listed | — |
| Hi-C Flashin’ Fruit Punch | 170–560 | 4 | None listed | — |
Good to know
- Prices vary by restaurant. Check the official app or zaxbys.com for the price at your store.
Frequently asked questions
How many calories are in the Zaxbys Barq’s Root Beer?
160 to 540 calories depending on the option, per the official Zaxbys guide. That’s close to the middle of the drinks list, where the typical item has about 160 calories in its smallest serving.
Does the Zaxbys Barq’s Root Beer contain milk?
The official guide doesn’t list milk. Shared equipment means cross-contact is still possible, so tell the staff about a milk allergy.
Is the Barq’s Root Beer gluten-free?
The official guide doesn’t list wheat or gluten, but Zaxbys doesn’t call any item gluten-free, and fryers and prep areas are shared. See our gluten-free guide.
How much does the Barq’s Root Beer cost?
Prices vary by restaurant. Check the official app or zaxbys.com for the price at your store.
Where this information comes from. All nutrition and allergen information on this site is taken from the official Zaxbys Nutrition & Allergen Guide (revised November 2025), published on zaxbys.com. We have not added anything of our own or changed the figures. Recipes, suppliers and menus change, so please verify with Zaxbys or your restaurant before you rely on it, especially if you have a food allergy. Verify before use.