Medically the review by Adda Bjarnadottir, MS, RDN (Ice) — written by Rachael Link, MS, RD top top October 10, 2019

Root beer is a rich and also creamy soft drink frequently consumed throughout phibìc America.

You are watching: A and w root beer caffeine

While most people know that other varieties of soda regularly contain caffeine, numerous are unsure about the caffeine content of source beer.

This deserve to be specifically problematic if she trying to limit your intake that caffeine or get rid of it from your diet.

This post investigates whether over there is caffeine in root beer and also provides some simple ways to check.

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In general, many brands of source beer offered in north America room caffeine-free.

Although the ingredients have the right to vary based upon the certain brand and also product, most species of this popular beverage contain carbonated water, sugar, food coloring, and also artificial flavors.

However, very few brands contain added caffeine.

Here room a few popular brand of source beer that don’t save caffeine:

A&W source BeerDiet A&W source BeerMug source BeerDiet Mug root BeerDad’s source BeerDiet Dad’s source BeerBarq’s Diet source BeerSummary

Most famous brands of root beer sold in phibìc America space caffeine-free.

Some species may contain caffeine

Although source beer is generally caffeine-free, part varieties might contain a little amount.

In particular, the brand Barq’s is noteworthy for the caffeine content.

The regular variety contains around 22 mg in each 12-ounce (355-ml) can. However, the diet version contains none (1).

For reference, a common 8-ounce (240-ml) cup the coffee contains roughly 96 mg the caffeine, i beg your pardon is about 4 time the amount in a have the right to of Barq’s (2).

Other caffeinated beverages, together as green or black color tea, space also higher in caffeine, often containing 28–48 mg per cup (240 ml) (3, 4).


Some certain brands might contain caffeine. For example, continuous Barq’s root beer has 22 mg in every 12-ounce (355-ml) serving.

How to check for caffeine

Foods that contain caffeine naturally, such as coffee, tea, and also chocolate, might not list it directly on the brand (5).

However, foods items that contain included caffeine, including details varieties of root beer, are forced to perform it ~ above the ingredient label.

Keep in mind the the Food and Drug administration (FDA) go not require manufacturers come disclose the precise amount of included caffeine in food products (6).

Therefore, the best way to determine precisely how much a specific product has is to examine the product’s website or reach out to the manufacturer directly.


Foods and beverages with included caffeine are forced to list it top top the ingredient label. To determine the exact amount a product has, check the brand’s website or reach out to the manufacturer.

The bottom line

Most arrays of root beer sold in phibìc America space caffeine-free.

However, specific brands, such together Barq’s, may contain a tiny amount of included caffeine in each serving.

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If she trying to mitigate your caffeine input or cut it out completely, be certain to examine the ingredient brand of your beverages closely to determine if they contain added caffeine.

last medically the evaluation on October 10, 2019


Medically the review by Adda Bjarnadottir, MS, RDN (Ice) — written by Rachael Link, MS, RD on October 10, 2019

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