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Where can I buy diet root beer soda?

Quick answer

Diet root beer is sold in most large US supermarkets and big-box stores, and online. Look under labels such as Barq's, A&W and Zevia, but many are now called Zero Sugar instead of Diet, so check the name on the shelf. Stock varies by store, so check a retailer's online listing or use the store locator on the brand site.

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In this article
  1. Where can you buy diet root beer?
  2. Look for “Zero Sugar” as well as “Diet”
  3. What is in diet root beer?
  4. How to find it fast
  5. Is it a good substitute for regular root beer?

Where can you buy diet root beer?

The easiest places are large grocery chains, big-box stores and online retailers. Smaller convenience stores often carry only a few flavors, so call ahead or use the store’s website. Availability changes by region and over time, so treat any list as a starting point.

Look for “Zero Sugar” as well as “Diet”

Many root beer makers now sell their no-sugar versions as Zero Sugar. Grocery listings for A&W Zero Sugar root beer and Barq’s Zero Sugar root beer show them in cans and bottles, and some stores list Zevia Zero Sugar Creamy Root Beer in 12 oz cans. The classic Diet Barq’s is listed by caffeine databases, but it may be hard to find in some stores.

Where What to expect
Supermarket soda aisle Usually one or two diet or zero-sugar root beers, in cans and bottles
Big-box stores Larger multipacks, often cans
Online retailers and store apps Wider choice, including multipacks and craft brands; check delivery and best-before date
Specialty and soda shops Craft root beers; some offer a sugar-free version

What is in diet root beer?

Diet Barq’s, for example, is a zero-calorie drink made by the Coca-Cola Company and is sweetened with aspartame and acesulfame potassium, according to a caffeine database. Unlike regular Barq’s, the diet version is caffeine-free. Other brands use different sweeteners such as stevia (Zevia lists stevia leaf extract), so read the ingredients if you avoid a particular one. People with phenylketonuria must avoid aspartame, and labels carry a warning for that.

How to find it fast

  1. Search the retailer’s website for “diet root beer” and “zero sugar root beer”.
  2. Filter by pickup or delivery for your nearest store.
  3. If you buy online, compare the price per can across pack sizes.
  4. Check the best-before date on multipacks.

Is it a good substitute for regular root beer?

It removes sugar and calories, but the taste differs from a full-sugar root beer because of the sweeteners. Try a single can before buying a case.

People also ask

Is diet root beer the same as zero sugar root beer?

They are similar no-sugar drinks. Many brands now use the Zero Sugar name instead of Diet, so search for both.

Does diet root beer have caffeine?

Many root beers are caffeine-free, and Diet Barq's is listed as caffeine-free. Check the label of the brand you buy.

What sweeteners are in diet root beer?

It varies. Diet Barq's uses aspartame and acesulfame potassium; other brands use different sweeteners, so read the ingredients.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. Caffeine Informer: Diet Barq's Root Beer, read 6 Nov 2026
Written by Drinks Type Editorial Team · Published Nov 24, 2024 · Updated Nov 6, 2026
About · How we verify this · Editorial policy · Corrections

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