How much caffeine is in zero drinks?

Over 75% of the US population consumes some form of caffeine daily, and a surprising number of zero-sugar sodas still provide a mild stimulant effect. This article explains exactly how much caffeine is in zero drinks and details the differences between various brands and types of beverages marketed as 'zero'.

Quick Summary

The 'zero' label on drinks typically signifies zero sugar or calories, not zero caffeine. Caffeine levels vary widely, from substantial amounts in zero-sugar energy drinks to moderate levels in zero-sugar colas, and zero in many clear sodas.

Key Points

• Zero Sugar Doesn't Mean Zero Caffeine: The 'zero' label on beverages primarily indicates a lack of sugar and calories, not a lack of caffeine.

• Zero-Sugar Colas Contain Caffeine: Many popular zero-sugar colas, such as Coke Zero and Pepsi Zero Sugar, contain a moderate amount of caffeine, comparable to or even more than their full-sugar counterparts.

• Zero-Sugar Energy Drinks Are Highly Caffeinated: Zero-sugar energy drinks, like Monster Zero Sugar, contain very high levels of caffeine, far exceeding the content found in zero-sugar sodas.

• Some Zero-Sugar Drinks Are Naturally Caffeine-Free: Clear sodas like Sprite Zero Sugar are naturally caffeine-free across all their versions, making them a safe choice for those avoiding stimulants.

• Labels Vary, So Always Check: Caffeine content can differ by brand, region, and formulation. Always check the product's nutrition label to confirm its caffeine level.

Demystifying the 'Zero' Label

When a product is labeled 'zero,' it almost always refers to zero sugar and/or zero calories, not zero caffeine. The presence of caffeine in a beverage is an entirely separate matter from its sugar content. For example, many cola beverages, including their zero-sugar counterparts, have caffeine added to enhance their flavor profile and provide a stimulating effect. Conversely, many clear sodas, such as Sprite, are caffeine-free across all versions, including their 'zero' variants. Always check the nutrition label to be certain of the caffeine content, as brands and regional formulations can differ significantly.

Caffeine Levels in Popular Zero-Sugar Sodas

Caffeine levels in zero-sugar soft drinks are typically lower than those found in coffee or energy drinks but are not insignificant. The amount can vary based on brand and serving size.

Coca-Cola Zero Sugar

Per a 12-ounce can, Coca-Cola Zero Sugar contains 34 mg of caffeine, the same amount as a regular Coca-Cola. The company also offers a separate 'Coca-Cola Zero Sugar Zero Caffeine' product for those seeking a completely stimulant-free version.

Pepsi Zero Sugar

In the United States, Pepsi Zero Sugar contains approximately 69 mg of caffeine per 12-ounce can, which is nearly double that of regular Pepsi. However, this was the case until early 2023 when PepsiCo reformulated the drink to reduce caffeine and remove ginseng in the US version. Canadian and other international versions may have different caffeine levels, with some older formulations still having higher amounts.

Dr Pepper Zero Sugar

For a 12-ounce can, Dr Pepper Zero Sugar contains 41 mg of caffeine, identical to the regular version. This puts its caffeine level above that of Coke Zero but below certain versions of Pepsi Zero Sugar.

Zero-Sugar Energy Drinks: A Different Category

When it comes to energy drinks, the 'zero sugar' label still implies a significant, and often higher, caffeine content. These drinks are specifically designed for energy boosts, and caffeine is a primary functional ingredient.

• Monster Zero Sugar: A 16-ounce can of Monster Zero Sugar (formerly known as Monster Absolutely Zero) contains 160 mg of caffeine. This is a substantial amount, almost half of the daily 400 mg limit recommended by the FDA.
• Monster Energy Ultra: Other zero-sugar Monster products, like the Ultra series, typically contain 150 mg of caffeine per 16-ounce can.
• Other brands: Zero-sugar versions of brands like Red Bull also contain caffeine, with an 8.4-ounce can having 80 mg.

Naturally Caffeine-Free Zero Drinks

Not all zero-sugar beverages contain caffeine. Many sodas, especially clear and citrus-flavored varieties, are naturally caffeine-free. Examples of zero-sugar drinks with no caffeine include:

• Sprite Zero Sugar
• 7UP Zero Sugar
• A&W Root Beer Zero Sugar
• Mug Root Beer Zero Sugar
• Fanta Zero Sugar

Comparison Table: Caffeine in Zero Drinks (per 12 fl oz)

Beverage	Type	Caffeine Content (mg)	Notes
Coke Zero Sugar	Cola	34	Same as regular Coke
Pepsi Zero Sugar	Cola	35-38 (U.S.)	Varies by formulation and region
Dr Pepper Zero Sugar	Specialty Cola	41	Same as regular Dr Pepper
Mountain Dew Zero Sugar	Citrus Soda	68	One of the highest for sodas
Monster Zero Sugar	Energy Drink	120 (per 12oz)	Contains 160mg per 16oz can
Red Bull (8.4oz)	Energy Drink	80	Higher concentration than sodas
Sprite Zero Sugar	Lemon-Lime Soda	0	Caffeine-free across all versions
Barq's Root Beer Zero Sugar	Root Beer	0	Barq's regular has caffeine, but zero version is not standardized.
Barq's Root Beer (Regular)	Root Beer	22	Note that not all root beers are caffeine-free

Conclusion

The amount of caffeine in zero drinks varies dramatically, from 0 mg in a Sprite Zero to over 150 mg in a zero-sugar energy drink. The key takeaway is that the 'zero' label refers to sugar, not necessarily caffeine. Consumers should always check the nutritional information to be certain of the caffeine content, as it can be a significant factor for those managing their intake for health reasons. For a comprehensive overview of caffeine in a wide range of products, reference reputable sources like the Center for Science in the Public Interest.

Frequently Asked Questions

Is there caffeine in Sprite Zero Sugar?

No, Sprite Zero Sugar is completely caffeine-free. Sprite, including all its zero-sugar and diet variations, is a lemon-lime soda formulated without any caffeine.

How much caffeine is in a 12-ounce can of Coke Zero?

A standard 12-ounce can of Coke Zero Sugar contains approximately 34 milligrams of caffeine, which is the same amount as a regular Coca-Cola.

Does Pepsi Zero Sugar have more caffeine than regular Pepsi?

Yes, depending on the region. In the U.S., a 12-ounce can of Pepsi Zero Sugar contains 35-38 mg of caffeine, whereas Pepsi has a similar amount. Note that past formulations had significantly more caffeine.

What is the caffeine content of Monster Zero Sugar?

A 16-ounce can of Monster Zero Sugar contains 160 mg of caffeine. This is a high amount, especially when compared to zero-sugar sodas.

Are all zero-sugar root beers caffeine-free?

No. While popular brands like A&W and Mug have zero-sugar versions that are caffeine-free, the regular version of Barq's Root Beer is caffeinated. Always check the specific product label.

Do zero-sugar drinks have less caffeine than regular versions?

Not necessarily. In many cases, like with Coke Zero, the caffeine content is identical to the regular version. For other brands, like certain versions of Pepsi Zero Sugar, it can be higher than the regular version.

What are the FDA's guidelines for daily caffeine intake?

The FDA recommends that healthy adults limit their daily caffeine intake to a maximum of 400 milligrams. Highly caffeinated zero-sugar energy drinks can contribute significantly to this limit.