Caffeine In Coke Zero: Everything You Need To Know

5 min read JUL 31, 2023

Can you say no to a chilled can of soda? Neither can we! And with summer here, nothing quenches your thirst quite like a can of soda. However, as refreshing as they are, sodas aren’t the healthiest drinks out there. One of the biggest reasons is the large amounts of added sugar. Plus, more and more people are becoming health conscious. Hence, to meet the ever-changing lifestyle choices of customers, major companies like Coca-Cola now offer healthier alternatives to their classic beverages. One popular version is Coke Zero.

Coke Zero claims to contain no sugar. But what about its caffeine content? Don’t worry about that too, because Coke Zero contains only about 34 mg of caffeine in a 12 oz can, which is considered safe for adults.

If you want to learn more about Coke Zero and its caffeine content, comparison against regular Coke, caffeine benefits, concerns, and side effects, just scroll down.

What Is Coke Zero?

What Is Coke Zero?

Introduced in 2005, Coke Zero is a healthy soda drink manufactured by the Coca-Cola company. Nowadays, the company sells the drink under a new label, “Coca-Cola Zero Sugar.” The purpose behind the drink’s rebranding was to clear up any confusion consumers may have regarding its sugar content.

The drink provides the signature Coca-Cola flavor without the added calories and sugar. Thus, it has become a hit among health enthusiasts and soda lovers alike. While it doesn’t contain any added sugar, it does include artificial sweeteners like Aspartame and Acesulfame Potassium. The good news is both sweeteners are approved as safe by the Federal Drug Administration (FDA).

Complete List of Ingredients in Coke Zero

  • Water
  • Caramel Color
  • Phosphoric Acid
  • Aspartame and Acesulfame K (Sweeteners)
  • Natural Flavors
  • Caffeine
  • Sodium Citrate (acidity regulator)
  • A Source of Phenylalanine

Nutritional Content Of Coke Zero (per 100ml)

  • Energy – 1.4kJ/0.3kcal
  • Fat- 0g
  • Carbohydrate- 0g
  • Protein- 0g
  • Salted- 0.02g
  • Caffeine- 9.6mg
  • Calories- 0

List Of All Coke Zero Flavors (Coke Zero Variants)

  • Cherry
  • Caffeine-Free Coke Zero Sugar
  • Vanilla
  • Lime
  • Cherry Vanilla
  • Orange Vanilla

Regular Coke Vs. Coke Zero

When it comes to sodas, particularly from the Coca-Cola brand, people love its flavor. Hence, one of the biggest selling points of Coke Zero is that it tastes much like regular Coke but without all the added sugar. In terms of flavors, it’s somewhere between regular Coke and Diet Coke (another healthy alternative from the Coca-Cola brand).

It goes without saying that regular Coke contains more sugar than Coke Zero. But surprisingly, both drinks contain the same amount of caffeine, i.e., 34 mg in a 12 oz can. So, in both cases, you don’t have to worry about your caffeine intake, that is, if you drink moderately.

What Is Caffeine?

Caffeine is a natural stimulant commonly found in tea, cacao plants, and coffee. It works by stimulating the central nervous system and brain. Hence, it helps you to stay alert, increase focus, and keep tiredness at bay. No wonder people depend on it to kick start their day!

When it comes to sodas like Coke Zero, caffeine is added more for its pleasant taste than its stimulating effects. Hence, you’ll usually find a lower caffeine content in such beverages. Nevertheless, its flavor and effects are still noticeable.

3 Benefits Of Caffeine

It Burns Fat and Boosts Metabolism

You’ll likely find caffeine as a primary ingredient in weight control or weight-loss supplements. That’s because caffeine could possibly increase fat burning and metabolism, thanks to its ability to stimulate the central nervous system.
Besides, since caffeine boosts your energy levels, it can help you exercise longer, ultimately decreasing your calories.

Boosts Mood and Improves Brain Function

Whenever you’re sleepy or tired, your brain releases the adenosine molecules. Caffeine can block these molecules and increase other signaling molecules like norepinephrine and dopamine (happy hormone). Thus, caffeine can possibly boost your mood, decrease the likelihood of mood disorders like depression, and stimulate brain function.

Caffeine In Prescription Medications

Caffeine is also used in a wide variety of OTC and prescription medicines, especially in pain-relieving medicines. People suffering from allergies, asthma, or pain might find caffeine making up their prescribed medication plan.

Are There Any Side Effects Or Concerns Associated with Caffeine?

The short answer? Yes, caffeine has some side effects. But so do your healthy vegetables, eggs, meat, and so on. Surprised? The point here is that there are side effects associated with overconsumption of anything. Likewise, caffeine in large doses can be dangerous. Some of its side effects include:

  • Nausea
  • Anxiousness
  • Seizures (only in extreme cases)
  • Headaches
  • Insomnia
  • Increased or irregular heart rate
  • Jitters

People sensitive to stimulants are at a higher risk of experiencing one or more of these side effects. If you experience any of the side effects mentioned above, check with your doctor immediately.

Important Note: According to the FDA, the regular safe amount of caffeine intake is 400mg (about 4 cups of brewed coffee) for healthy adults. So that means you can drink unlimited Coke Zero sodas as long as you stay under the 400mg mark? WRONG. Remember, moderate consumption is key, so stick to just 1-2 cans a day (a maximum of 24 oz per day). And more importantly, sodas shouldn’t replace more nutritious drinks and foods in your diet.

Caffeine In Coke Zero: Final Thoughts

Now that you’ve reached the end of our guide, we hope we’ve helped you find the answer to how much caffeine is in Coke Zero Sugar. That’s 34mg of caffeine per 12oz of Coke Zero. Before you go, here are some takeaways that you must remember:

  • Coke Zero contains no added sugar.
  • Coke Zero has 34mg of caffeine in a 12oz can.
  • The taste of Coke Zero is very similar to regular Coke when compared to Diet Coke.
  • You should only drink 1-2 cans of Coke Zero per day (24oz max).
  • Coke Zero is available in 6 different flavors.


Is Coke Zero healthy?

There can be two answers to this question. Is Coke Zero healthy in general? No, it isn’t. The drink doesn’t add any nutritional value to your diet. Is Coke Zero healthy compared to regular Coke? Yes, it is because it contains no added sugar.

Is Coke Zero high in caffeine?

Coke Zero is not high in caffeine compared to other similar drinks and coffee. It contains only 34mg of caffeine per can (12oz).

Which Coke has more caffeine?

Diet Coke has more caffeine. Compared to regular Coke and Coke Zero’s 34mg caffeine content, Diet Coke has 46mg in a 12oz can.

How much caffeine is too much?

Consumption of around 1200mg of caffeine is considered too much as one can show toxic side effects like seizures. The FDA considers 400mg of caffeine per day safe for healthy adults.

Is it okay for kids to drink Coke Zero?

While a can of soda once in a while might not hurt, the American Heart Association suggests that it’s not okay for kids to drink sodas like Coke Zero since they contain artificial sweeteners.

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