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Can you have diet coke on keto? Best Diet Coke float recipe

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Hello there! So, you've decided to follow a ketogenic diet to lose weight or perhaps for the health benefits. Now, you're wondering, "Can you have Diet Coke on Keto?" As a beverage that claims zero calories and zero carbs, it seems a likely candidate for a low-carb diet, right? Well, let's dive into the bubbly world of diet sodas and see what's up!

Yes, you can have Diet Coke on keto. Diet Coke is a zero-calorie, zero-carb soft drink that is sweetened with artificial sweeteners. Artificial sweeteners do not raise blood sugar levels, so they are safe to consume on keto.

However, it is important to note that Diet Coke is not a very nutrient-rich beverage. It is high in artificial chemicals and additives, and it does not contain any vitamins or minerals. Therefore, it is best to consume Diet Coke in moderation as part of a healthy keto diet.

can you have diet coke on keto: clear glass filled with Diet Coke and ice

Here are some additional tips for enjoying Diet Coke on keto:

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  • Choose Diet Coke Zero Sugar or Diet Coke with Splenda. These versions of Diet Coke are sweetened with sucralose, which is a more stable artificial sweetener than aspartame.
  • Drink Diet Coke in moderation. It is best to limit your intake of artificial sweeteners to 40 milligrams per day.
  • Enjoy Diet Coke as part of a healthy keto diet. Make sure to get your nutrients from whole, unprocessed foods.

What's in a Diet Coke?

Diet Coke, like many other diet drinks, promises a sweet taste without the guilt of added sugars. It includes ingredients such as caramel color, phosphoric acid, and acesulfame potassium, an artificial sweetener, among others. Most notably, it boasts zero sugar and zero carbs, which seem to align with the goals of a ketogenic diet.

Diet Coke and the Ketogenic Diet

On a strict keto diet, your goal is to limit your carbohydrate intake to 20-50 grams of net carbs per day. Since Diet Coke contains zero carbs, it's technically allowed. The good news is that drinking Diet Coke won't knock you out of the state of ketosis. However, while it may fit into your carb intake goals, it's worth considering other nutritional and health aspects.

The Impact of Artificial Sweeteners

Artificial sweeteners like those found in Diet Coke may have zero calories, but they could potentially lead to weight gain and other health problems. Some studies suggest that artificial sweeteners can increase insulin levels, potentially leading to insulin resistance, which can result in metabolic syndrome and type 2 diabetes.

Moreover, artificial sweeteners might stimulate sugar cravings and negatively impact your gut microbiome, upsetting your gut health. On the other hand, natural sweeteners like monk fruit are usually a better choice as they have a lower glycemic index and are better for your overall health.

Diet Soda vs Regular Soda

Regular soda is packed with sugar and high in calories, and it's not a great choice for keto dieters or anyone trying to maintain a healthy lifestyle. However, it's important to note that replacing regular soda with diet soda isn't necessarily the healthiest swap.

Consider opting for carbonated water for that fizzy satisfaction without any added sugars or artificial sweeteners. It can be a great alternative to both diet and regular soda, and adding a splash of natural fruit juice can make it even more refreshing.

Considering Energy and Sports Drinks

While energy and sports drinks may seem like a good choice for a quick pick-me-up, many are surprisingly high in sugar content. Some energy drinks have as many grams of carbohydrates as soft drinks! Always check the label before enjoying these drinks. Read about these two keto sports drinks: Powerade and Propel.

Alternatively, a protein shake made with low-carb protein powder and unsweetened almond or whole milk can be a great way to replenish after a workout without kicking you out of ketosis.

The Importance of Hydration

One key to successful keto is drinking plenty of water. Staying hydrated helps manage keto flu symptoms, keeps you feeling full, and supports overall health. Sugar-free sodas and low-calorie drinks can be part of your hydration routine, but they shouldn't replace plain water.

So, how much water should you drink every day while following a ketogenic diet? While individual needs can vary, a good rule of thumb is to aim for a minimum of 8 cups, or 64 ounces, of water per day. However, on a ketogenic diet, you might need even more due to increased water loss associated with the diet. Many health and wellness experts recommend drinking half of your body weight (in pounds) in ounces. So, if you weigh 160 pounds, you'd aim for about 80 ounces of water per day.

Also, consider that if you're active or live in a hot climate, your body will need additional hydration. In these cases, try adding an extra cup or two to your daily intake. Another good practice is to drink a glass of water with each meal and make sure to hydrate before, during, and after any physical activity.

Remember, while diet sodas and other low-carb beverages can provide hydration, nothing beats the benefits of plain, refreshing water. Your body needs adequate hydration to function correctly and maintain a healthy metabolic rate. Always listen to your body and drink when you're thirsty. If you're not used to drinking a lot of water, start by increasing your intake gradually and set reminders if needed. Over time, you'll likely find that you naturally drink more.

Alternatives to Diet Coke

If you're questioning whether Diet Coke or diet Pepsi is the best choice for your keto lifestyle, you might want to consider healthier, keto-friendly drinks. Green tea and black tea are both excellent choices, offering antioxidants with virtually zero carbs. Iced tea can also be a good choice, but make sure it's unsweetened or sweetened with keto-friendly sweeteners.

Coconut water and unsweetened almond milk offer excellent hydration and provide nutritional value that diet sodas lack. Bone broth can help prevent the "keto flu" and keep your electrolytes balanced.

If you're missing the fizz, sparkling mineral water like La Croix, or club soda can be great alternatives. For those social nights, hard liquors and hard seltzers usually have fewer carbs than other alcoholic beverages. Even a vodka soda with a splash of lime juice can be a fun, low-carb option!

CaloriesFat (g)Protein (g)Carbohydrates (g)Fiber (g)Net Carbs (g)
Diet Coke000000
Unsweetened tea000000
Unsweetened coffee000000
Sparkling water000000
Black coffee200000
Green tea200000
Black tea200000
Bulletproof coffee100150000
Bone broth000000
Unsweetened almond milk3051101
Unsweetened coconut milk45120303
Unsweetened soy milk5044202

As you can see, there are many keto-friendly drinks available. These drinks are all low in carbs and high in fat, making them a great addition to a keto diet. They are also a good source of hydration, which is important for overall health.

It is important to note that even keto-friendly drinks can kick you out of ketosis if you drink too much of them. It is important to be mindful of your portion size and to choose drinks that fit within your daily carb limit.

Here are some additional tips for enjoying keto-friendly drinks:

  • Choose drinks that are unsweetened or sweetened with artificial sweeteners.
  • Drink drinks in moderation.
  • Enjoy drinks as part of a healthy keto diet. Make sure to get your nutrients from whole, unprocessed foods.

Diet Coke and Keto: Yay or Nay?

Ultimately, the decision to drink Diet Coke while following a keto diet is personal. While it won't disrupt ketosis due to its zero carbs, potential negative side effects from artificial sweeteners are worth considering.

Remember, your primary aim on a keto diet should be to fuel your body with nutrient-dense foods. While a Diet Coke won't break your carb bank, drinks like green tea, coconut milk, or even plain water offer more nutritional benefits and are better for your overall health.

So, can you have Diet Coke on keto? Yes, technically, but whether you should is a different question. It's always a good idea to chat with medical professionals about any significant changes to your diet. Stay healthy, stay hydrated, and here's to a successful keto journey!

Diet Coke Float


  • 1 cup sugar-free ice cream
  • 1 can Diet Coke


  1. Pour the ice cream into a glass.
  2. Pour the Diet Coke over the ice cream.
  3. Enjoy!

Nutritional Information:

  • Serving Size: 1 float
  • Calories: 100
  • Fat: 10g
  • Protein: 2g
  • Carbohydrates: 3g
  • Fiber: 0g
  • Net Carbs: 3g

This keto Diet Coke float is a delicious and refreshing treat that is perfect for anyone following a low-carb diet. It is made with only a few simple ingredients and is ready in just a few minutes. The sugar-free ice cream and Diet Coke combine to create a creamy, fizzy treat that will satisfy your sweet tooth without kicking you out of ketosis.


  • For a richer flavor, use a dark chocolate or coffee flavored sugar-free ice cream.
  • You can also add other toppings to your float, such as whipped cream, chocolate syrup, or sprinkles.
  • To make the float ahead of time, simply prepare it as directed and then store it in an airtight container in the refrigerator for up to 24 hours.

Key Takeaways

  • Diet Coke, with zero sugar and zero carbs, technically fits a low-carb, ketogenic diet.
  • Artificial sweeteners may increase insulin levels and disturb gut microbiome health.
  • Consider healthier, nutrient-rich alternatives like green tea, coconut water, or unsweetened almond milk.
  • Always consult with a medical professional before making substantial dietary changes.

Frequently Asked Questions (FAQ)

1. Can you have Diet Pepsi on a keto diet?

Like Diet Coke, Diet Pepsi also has zero sugars and zero carbs, making it technically okay on a keto diet. However, the same concerns about artificial sweeteners apply.

2. What are some good alternatives to diet sodas?

Some good alternatives include unsweetened green tea, black tea, coconut milk, mineral water, bone broth, and plain water.

3. Does Diet Coke affect ketosis?

While Diet Coke has zero carbs and won't directly affect ketosis, artificial sweeteners could potentially affect your insulin levels and cravings, which may indirectly impact your keto journey.

4. Is Coke Zero keto-friendly?

Yes, Coke Zero is keto-friendly since it contains zero carbs. However, it also contains artificial sweeteners, which could have other health implications.

5. Can I have fruit juices on a keto diet?

Most fruit juices are high in sugar and carbs and are typically not recommended on a keto diet. It's best to check the nutritional information and consider the net carbs.

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