Is Sugar-Free Redbull Keto-Friendly: Here’s What You Need to Know

Are you craving an energy boost but not sure what is safe to use for the keto diet? Have you looked into energy drinks but are afraid that it will knock you out of ketosis? We’ve all been there and know that we have to adapt.

One of the most popular energy drink brands is made by Red Bull. They come in various flavors and options, one of which is sugar-free. That leads us all to ask one question. Is sugar-free Red Bull Keto?

Sugar-free Red Bull can be considered keto-friendly because it does not contain any sugar and has only 3 grams of carbohydrates per 8.4-ounce serving.

While following a ketogenic diet, the goal is to limit your carbs while increasing healthy fats. The fact that sugar-free Red Bull has no sugar and low carbs makes the drink a viable option for those following keto.

It is also important to note that although sugar-free Red Bull is compatible with keto, it contains stimulants, such as caffeine, which can have negative effects if you have too much. As long as you are enjoying these in moderation, you should be fine.

Keep reading for more information on what makes sugar-free Red Bull a keto-friendly option for energy drinks.


The keto diet, which you may have heard referred to as the ketogenic diet, has really become popular over the last several years. When following keto, you consume foods that are very low in carbohydrates, moderate in protein, and high in healthy fats. Keto has been praised by medical professionals for potential health benefits like improved blood sugar, weight loss, and increased energy levels.

When it comes to the keto diet, it is important to note that not all foods and beverages are created equal. The goal when starting keto is to get into a state of ketosis and remain there for as long as possible. When you are in ketosis, your body is forced to burn fat for energy because it won’t have the carbohydrates to burn instead. In order to get into ketosis, you have to limit your carb intake to very minimal levels.

It is crucial to choose keto-friendly foods and drinks that are high in healthy fats and very low in sugar and cars. Some of the best examples of keto-friendly foods include:

  • Meat
  • Broccoli
  • Fish
  • Cauliflower
  • Eggs
  • Leafy greens
  • Nuts and seeds
  • Avocado

When it comes to beverages, some examples of keto-friendly drinks include:

  • Water
  • Unsweetened coconut milk
  • Tea
  • Unsweetened almond milk
  • Coffee

On the other hand, food and drinks that contain carbohydrates in the form of sugar, starch, or grains need to be avoided on keto as much as possible. You should also be reading nutrition labels carefully, as prepackaged food is known to include hidden carbohydrates.

Overall, the popularity of keto has had an effect on low-carb options on the market. Grocery stores and restaurants are carrying keto-friendly food and beverages, and the number of products available only seems to be growing.

Sugar-Free Red Bull And Keto

Sugar-free Red Bull is a popular energy drink that is marketed as a low-calorie and low-sugar alternative to regular Red Bull, which, depending on the flavor, contains up to 27 grams of sugar per serving. Sugar-free Red bull contains several ingredients to provide an energy boost. These ingredients include B vitamins, taurine, and caffeine. We will dive deeper into the ingredients shortly.

Since the goal of keto is to enter a state of ketosis, which, as stated above, is achieved by limiting carb intake, sugar-free Red Bull is an attractive option for keto dieters.

It is important to take note of the fact that the beverage contains artificial sweeteners, which may trigger insulin responses in some people. Insulin regulates the sugar levels in your blood, and spikes may interfere with ketosis.

Caffeine can also have a negative effect on ketosis if it causes your body to produce excess amounts of cortisol, a stress hormone that decreases insulin sensitivity, leading to increased blood sugar levels, according to the American Journal of Managed Care.

With this in mind, you should remember that artificial sweeteners and caffeine will not have the same effect on everyone. If you want to follow a strict keto diet, the presence of these things might make this beverage a bad idea. If you are following dirty keto or some other ketogenic variant, you should have no issues enjoying these delicious energy drinks.

Sugar-Free Red Bull Ingredients

The ingredients in sugar-free Red Bull and a brief explanation of each ingredient are as follows:

  • Carbonated Water – Plain water that has been mixed with carbon dioxide. This is what gives carbonated drinks their “bubbles.”
  • Taurine – A natural amino acid that benefits cognition and exercise performance, according to the U.S National Library of Medicine.
  • Citric Acid – A natural acid that works as a preservative and flavor enhancer.
  • Magnesium carbonate – A salt used as a source of magnesium.
  • Caffeine – A natural stimulant that is found in virtually every energy drink produced. It is used to increase focus and alertness.
  • Niacinamide – This ingredient is Vitamin B3, which the body uses to turn the foods we eat into energy. It also aids in keeping our nervous systems functioning properly.
  • Calcium pantothenate – This is Vitamin B5, which the body uses to produce energy.
  • Pyridoxine hydrochloride – This is Vitamin B6, which the body uses for many of its processes. A study performed by Oregon State University showed that two of the most important processes aided by this vitamin are the metabolism of amino acids and the production of neurotransmitters.
  • Vitamin B12 – No hard-to-pronounce name for this water-soluble vitamin that your body uses for healthy nerve function and the production of red blood cells.
  • Natural and artificial flavors – Just as the name implies, these are used to flavor the beverage.
  • Colors – A caramel color, along with a variety of other colors, are combined to give the drink its distinctive color.

While the majority of these ingredients are keto-friendly, one of the artificial sweeteners, aspartame, is not suitable for all ketogenic dieters. Some people are sensitive to the ingredient and experience headaches or digestive issues after consuming it.

Carbohydrates in Sugar-Free Red Bull

Since sugar-free Red Bull does not contain any added sugar, it relies on artificial sweeteners to give it its sweet taste/ The number of carbohydrates in the beverage depends on the amount you are drinking.

According to the Red Bull website, an 8.4-ounce can of sugar-free Red Bull contains 2 grams of carbohydrates, none of which come from sugar. This makes the drink more than suitable for those following a low-carb diet.

When following keto, it is recommended that you consume no more than 20 to 50 carbs on a daily basis. The exact number varies depending on numerous factors such as activity level, age, weight, or even just personal preference. Since sugar-free Red Bull has only two carbs per can, you can drink one and have plenty of carbs left for the rest of your day.

Caffeine in Sugar-Free Red Bull

A can of sugar-free Red Bull has 80 mg of caffeine. Caffeine is a natural stimulant that provides several benefits, including increasing your energy, improving your mood, improving your mental performance, and increasing your alertness.

Although caffeine has a number of benefits and is not necessarily harmful to those following a ketogenic diet, some people experience side effects such as finding it difficult to rest, anxious feelings, and jitteriness. These symptoms are often amplified when drinking a large amount of caffeine. It may also be worth noting that drinking large amounts of caffeine can cause your to become dehydrated easier, which can be a problem for keto dieters.

Benefits of Sugar-Free Red Bull on the Keto Diet

There are several potential benefits of consuming sugar-free Red Bull on a ketogenic diet. These include:

  1. Providing a source of energy – Sugar-free Red Bull contains caffeine, which is a stimulant that can increase energy levels and improve mental focus. This can be especially beneficial for people on the keto diet who may experience fatigue or brain fog as their bodies adjust to using fat for fuel instead of carbohydrates.
  2. Aiding in mental clarity – In addition to caffeine, there are other ingredients that are shown to increase mental clarity, such as B vitamins and taurine. These can help to enhance cognitive function and may be useful for keto dieters who need to stay alert and focused throughout the course of the day.
  3. Low in carbohydrates and calories – Sugar-free Red Bull is a low-carbohydrate, low-calorie beverage that can be beneficial for people on the keto diet who need to keep their carbohydrate and calorie intake low. However, it is important to note that the artificial sweeteners used in sugar-free Red Bull can sometimes trigger an insulin response, which may affect ketosis.

While the benefits of sugar-free Red Bull on the keto diet are primarily related to energy and mental clarity, there may be some additional benefits associated with the drink.

One potential benefit is that sugar-free Red Bull contains antioxidants such as vitamins C and E, which can help to protect cells from damage caused by free radicals. Additionally, the drink contains the amino acid taurine, which has been shown to have a number of health benefits, including reducing inflammation, improving cardiovascular function, and aiding in the regulation of blood sugar levels.

Another potential benefit is that sugar-free Red Bull may help to improve athletic performance. The caffeine and other ingredients in the drink have been shown to increase endurance, reduce fatigue, and improve reaction time, which can be particularly useful for athletes who need to perform at their best during training or competitions.

It is important to note, however, that the benefits of sugar-free Red Bull may not be the same for everyone and that consuming large amounts of the drink can have negative health effects. It is important to consume sugar-free Red Bull in moderation.

Risks of Sugar-Free Red Bull on the Keto Diet

While Sugar-Free Red Bull contains no sugar and is low in carbs, there are still potential risks associated with consuming it on a keto diet. Here are a few potential risks:

  1. Caffeine: Sugar-Free Red Bull contains caffeine, which can interfere with sleep quality and quantity, especially if consumed in the late afternoon or evening. Poor sleep can negatively affect weight loss, insulin resistance, and overall health.
  2. Artificial Sweeteners: Sugar-Free Red Bull contains artificial sweeteners, such as aspartame and acesulfame potassium, which may cause an insulin response in some individuals, potentially leading to blood sugar spikes. Additionally, some people may experience digestive issues, headaches, or other side effects from consuming artificial sweeteners.
  3. Dehydration: Caffeine is a diuretic, meaning it increases urine output, which can lead to dehydration if not compensated for by increased water intake. Dehydration can have negative effects on physical and mental performance, as well as overall health.
  4. Nutrient Deficiencies: If Sugar-Free Red Bull is consumed in place of nutrient-dense foods, it may contribute to nutrient deficiencies, which can have negative effects on health and weight loss.
  5. Electrolyte Imbalances: When you’re on a keto diet, your body may excrete more water and electrolytes, which can lead to imbalances in minerals like sodium, potassium, and magnesium. Sugar-Free Red Bull does not contain significant amounts of these electrolytes, and its diuretic effect may further exacerbate electrolyte imbalances, potentially leading to symptoms like muscle cramps, fatigue, and headaches.
  6. Increased Hunger: While Sugar-Free Red Bull is low in calories, some people may find that consuming it increases their hunger or cravings for other sweet or high-calorie foods. This can make it more difficult to stick to a keto diet and achieve weight loss goals.
  7. Adverse Reactions: Some individuals may be sensitive to the ingredients in Sugar-Free Red Bull and experience adverse reactions, such as heart palpitations, anxiety, or gastrointestinal distress. If you experience any of these symptoms after consuming Sugar-Free Red Bull, it’s best to avoid it in the future.

Overall, while Sugar-Free Red Bull is low in carbs and calories, it’s important to be mindful of its potential risks and to consume it in moderation, if at all, on a keto diet. It’s also important to prioritize whole, nutrient-dense foods to meet your nutritional needs and support your overall health.


So, is Sugar-Free Red Bull keto-friendly? Based on the ingredients and carbohydrate content, it’s safe to say that Sugar-Free Red Bull is a keto-friendly beverage option. However, it’s important to be aware of the potential risks associated with caffeine and aspartame. If you’re sensitive to either of these ingredients, it’s best to avoid Sugar-Free Red Bull or consume it in moderation. As with any food or beverage, it’s important to listen to your body and make choices that work for you and your specific dietary needs.

Derek Masters

Derek Masters is an Amazon best-selling author. After much research, he began keto at 381 pounds in the middle of 2019. Losing 60 pounds and counting, he wants to share what he's learned with others who wish to learn about the ketogenic lifestyle

Recent Posts