Can Diet Coke Be Considered a Keto Friendly Drink?

The keto diet craze happening around the world is not a fluke. Thousands of people have managed to lose drastic amounts of weight by limiting their carb intake. While there are still many opponents to it, it’s an excellent weight loss tool that can help you get in shape quickly.

There’s only one problem with the ketogenic diet – the limited number of foods and drinks. Many will argue that keto meals are not tasty at all, others will tell you it’s not true. The trick lies in variety. While keto meals may not be that tasty due to the lack of carbs, there are plenty of great recipes and drinks that taste just as good as regular food.

Keto dieters are rightfully confused on the choice of drinks. Is coffee keto? Can you drink tea? Many are properly wondering if diet Coke is keto. With millions of fans around the world, some people are just too addicted to Coke that they can’t go without it even when on a ketogenic diet.

We’re here to answer the big question once and put an end to it once and for all.

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Can Diet Coke be Considered Keto?

First things first – diet Coke is advertised as being carb, sugar, and calories-free. That means that it’s not likely to kick you out of ketosis. So, yeah, diet Coke is a keto-safe drink. However, given the adverse effects it has on our health, it’s best to stay away from it.

Diet Coke is formulated to mimic the distinct Coke flavour. If you follow a low-carb diet, you’ll be glad to know that Coke Zero has zero carbs. Consuming carbs can kick you out of ketosis and put your body back on track on downing carbs for energy. That means that yes, you can drink diet Coke when on a ketogenic diet. However, water stays the top keto diet drink so far.

Coke and its version are highly dangerous for your health. It doesn’t matter if you drink diet Coke or regular – it’s still not great for your health. It can chip away at your teeth enamel and do a lot of damage to your organs. Of course, this can happen if you drink a lot of it. If you enjoy it in moderation, you can drink diet soda on keto.

Is Aspartame-Keto Friendly?

Coke Zero uses aspartame and acesulfame potassium as the sweeteners. Both have zero carbs or calories, yet they have been associated with negative health issues. Drinking too much Coke or Coke zero can lead to diabetes and weight gain.

Additionally, Coke has too much caffeine in it, which might give you a temporary energy boost, but can also dehydrate you when you drink it often. Caffeine is a diuretic and will make you urinate more, washing away liquids from your body.

Diet Coke and Carbs

As mentioned, diet Coke, known under the brand Coke Zero, has no carbs or calories. This makes it a perfect drink for ketogenic diets, but due to its negative health effects, you’re better off with water. If you go keto, you must ensure that your body will stay in ketosis. Instead of tempting yourself with unsafe keto diet drinks, you should play it safe and stick to water.

Best Diet Coke Keto Alternatives

If you’re on a keto diet and it’s simply too boring for you to drink water all the time, there are plenty of great alternatives. Don’t let anybody tell you otherwise. Diet Coke is ok in moderation, but other drinks are even better.

  • Water with lemon: 0 carbs
  • Coffee: 0 carbs
  • 5 oz. glass of wine: 2 carbs
  • A cup of coconut water: 9 carbs
  • A glass of vegetable juice: 11 carbs
  • A cup of milk: 11 carbs
  • 12 oz. kombucha tea: 12 carbs
  • 1 cup soy milk: 12 carbs
  • 12 oz. beer: 13 carbs
  • 12 oz. caffe latte: 15 carbs
  • A glass of orange juice (natural): 26 carbs
  • 12 oz. ice tea: 32 carbs
  • 1 cup fruit smoothie: 36 carbs
  • 12 oz. vitamin water: 36 carbs
  • Soft drinks: 39 carbs
  • 10 oz. milkshake: 60 carbs

*The card count represents net carbs per average serving.

If you like your coffee or tea sweet, keep in mind that a teaspoon of sugar is around 4 carbs. Since you must stay under 20 carbs per day on a keto diet, sweetening your drinks with sugar is out of the question.

As you ca see from the list above, there are many keto diet drinks you can have. Stay away from those with net carbs of over 10 since you can’t stay under 20 carbs per day if you drink them. Water is the clear winner – for an extra twist, add a bit of lemon – it won’t make a difference in terms of carbs.


While diet Coke won’t kick you out of ketosis, it’s not a very healthy drink for you. To stay in ketosis and continue with your keto diet, it’s best to stick to the aforementioned drinks. Water, coffee, and tea remain the best, so if you want to keep it keto, you’re better off with them.

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