Are you an avid Coke Zero drinker? You may be wondering how much caffeine is contained in the zero-calorie beverage. We were wondering the same; in this post, we take a closer look at the caffeine content of Coke Zero to help you better understand how much caffeine you are taking in.

Do you enjoy Coke Zero but are concerned about how much caffeine it contains? You’re not alone. Given the growing controversy around caffeine, many people are interested in learning more about how much of it is present in their favorite beverages. Coke Zero contains caffeine; that much is well-known, but how much? Is the caffeinated content of Coke Zero comparable to other caffeinated drinks? This post addresses all of these questions and more. If that piques your interest, read on to learn more!


What Is Coke Zero?

Coke Zero

Coke Zero is just one of the many drinks that Coca-Cola makes. The fundamental difference between Coke Zero and regular Coca-Cola is that it has zero calories and zero sugar. For individuals watching their calorie intake, this beverage is a great substitute for conventional soda. The drink also comes in various flavors to choose from, including  Cherry, Vanilla, and  Orange. Therefore, you always have a variety of options to choose from, depending on your preference!


Does Coke Zero Contain Caffeine?

Does Coke Zero Contain Caffeine

Yes, 330 ml of Coke Zero contains around 32 mg of caffeine as opposed to 330 ml of Diet Coke, which contains roughly 42 mg. Comparatively, a cup of tea typically has approximately 75 mg of caffeine, whereas a cup of coffee typically has about 100 mg. Even though the caffeine content is not that much, you should always ensure you keep track of your caffeine consumption to avoid any potential adverse effects.

Pro Tip(s):

  • If you wish to avoid caffeine completely, Coca-Cola offers caffeine-free products such Caffeine-Free Diet Coke, Fanta, and Sprite. These beverages are a great option if you’re sensitive to caffeine or just trying to cut back.

How Much Caffeine Does Coke Zero Contain?

Does Coke Zero Contain Caffeine

The amount of caffeine depends on the serving size. The following table outlines the amount of caffeine contained in different servings of Coke Zero.

Serving Size (fluid ounce)Caffeine Content (mg)
7.5 fl. oz.21
12.0 fl. oz.34
13.2 fl. oz.37
16.9 fl. oz.48
20.0 fl. oz.57


How Much Caffeine Do Other Coke Zero Flavors Contain?

Zero Coke Flavors

Coke Zero is available in various flavors, including Cherry, Cherry Vanilla, Vanilla, and Orange Vanilla, all of which have varying caffeine contents from the original Coke Zero. The amounts of caffeine in each Coke Zero flavor are listed below:

  • Coke Zero Orange Vanilla Caffeine

Serving Size (fluid ounce)Caffeine (mg)
12 fl. oz.34
20 fl. oz.57

  • Coke Zero Cherry Vanilla Caffeine Content

Serving Size (fluid ounce) Caffeine (mg)
12 fl. oz.33
16 fl. oz.47

  • Coke Zero Cherry Caffeine Content

Serving Size (fluid ounce)Caffeine (mg)
7.5 fl. oz.21
12 fl. oz.34
13.2 fl. oz.37
16.9 fl. oz.48

  • Coke Zero Vanilla Caffeine Content

Serving Size (fluid ounce)Caffeine (mg)
12 fl. oz.34


Coke Zero Contains Less Caffeine Than Coffee and Tea

The fact that Coca-Cola has less caffeine than both coffee and tea may come as a surprise to many. Levels of caffeine in Coca-Cola are relatively low compared to other regularly consumed drinks. The caffeine in Coca-Cola beverages, such as Coke Zero and Dr. Pepper, is only used to add a mild bitterness to the overall flavor and blends well with sugar and sweeteners to produce an appetizing taste.


Is Coke Zero Safe For Mums-To-Be?

Is Coke Zero Safe For Mums-To-Be

In moderation, the 32mg of caffeine in a 330 ml can of Coke Zero is not a problem. The Food Standards Agency recommends that pregnant women should not consume more than 200mg of caffeine per day. That’s right! up to six cans of Coke Zero a day won’t put a pregnant woman over her caffeine limit. Yet, it is crucial to remember that consuming too much caffeine might cause health issues like hypertension and irregular heartbeat. Hence, it is important to moderate your consumption of Coke Zero and other caffeine sources as your doctor recommends to promote a healthy pregnancy.


Does Coke Zero Enhance Athletic Performance?

Most athletes rely on sports drinks and energy drinks to get that extra boost of energy that comes from caffeine. Knowing that Coke Zero also contains caffeine, many athletes may wonder if it can help enhance their athletic performance. The answer is a resounding yes! You can use coke zero just like any other caffeinated beverage to get a quick energy boost.

Pro Tip(s):

  • Consider energy drinks like Red Bull or Monster for an extra caffeine boost, as they contain a similar amount of caffeine as coffee. However, limit your intake to four 8-ounce servings per day or two 16-ounce cans of Monster to avoid negative side effects due to excessive caffeine consumption, such as headaches or insomnia.

What Are the other ingredients in Coke Zero?

Other ingredients of Coke Zero include:

  • Water
  • Color (Caramel E150d)
  • Phosphoric Acid
  • Sweeteners (Aspartame, Acesulfame K)
  • Natural Flavourings Including Caffeine
  • Acidity Regulator (Sodium Citrate)
  • Contains a Source of Phenylalanine

Is Coke Zero Healthy?

Coke Zero uses artificial sweeteners to enhance sweetness without calories. Yet, several studies suggest that artificial sweeteners may accelerate obesity and metabolic syndrome. Despite this, popular artificial sweeteners like aspartame and acesulfame potassium are still used in Coca-Cola Zero Sugar, which is effectively the same product as Coke Zero with minimal alterations to the natural taste composition (Ace-K).


Bottom Line

Coke Zero contains caffeine, albeit in a minimal amount. Note that caffeine zero is not meant to be a sports or energy drink, and caffeine is merely used to enhance the taste and flavor of the beverage. We suggest standard sports drinks like Monster and Red Bull if you’re after something with a higher caffeine content. If you are looking for beverages with less or no caffeine, however, Coca-Cola has a plenitude of options for you to choose from—for instance, Fanta and Sprite.

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