
Nowadays, many people are turning to a vegan diet. There are multiple reasons for this trend. The most common reasons are related to health, environment, and animal welfare.
Energy drinks are becoming more and more popular in recent years. A lot of people cannot ignore their ability to provide a quick boost.
Relentless energy drink is one of the most popular energy drinks. That’s why you might be wondering if this energy drink is vegan or not.
In short, Relentless energy drink is definitely vegan.
If you still have concerns, then you should keep reading this article. I’ll discuss its ingredients and let you know if they’re vegan or not.
Let’s explore…
Nutrition Facts Of Relentless Energy Drink
Let’s get through the nutrients of Relentless energy drink:
Nutrients | Amount in Relentless Energy Drink (500ml) |
Calories | 108 calories |
Caffeine | 160mg |
Carbohydrate | 31g |
Sugar | 24g |
Salt | 0.70g |
Niacin (vitamin B3) | 16mg |
Pantothenic Acid (vitamin B5) | 8.5mg |
Cobalamin (vitamin B12) | 2.0µg |

Ingredients In Relentless Energy Drink
Relentless energy drink is known to have trace amounts of these ingredients:
- Carbonated Water
- Citric Acid
- Sucrose
- Erythritol (Flavour enhancer)
- Taurine
- Caramel E150d (Colour)
- Guarana seed extract
- Sucralose
- Potassium sorbate
- Sodium citrate (Acidity regulator)
- Sodium benzoate

Are The Ingredients In Relentless Energy Drink Vegan?
Ingredients | Purpose | Where does it come from commercially? | Is it vegan? |
Niacin (vitamin B3) | Helping to convert fat and carbs from food into energy. | Synthetic | Yes |
Sucrose | Sweetener | Vegetable | Yes |
Pantothenic acid (vitamin B5) | Helping to convert carbs and fat from food into energy. | Mostly synthetic. | Yes |
Citric acid | Preservative or Flavouring | Vegetable, bacterial, fungal, or mould. | Yes |
Erythritol | Flavour enhancer | Vegetable (usual corn) | Yes |
Sodium benzoate | Anti-microbial agent. It prevents the drink from spoiling. | Mineral-synthetic | Yes |
Taurine | Enhancing physical performance when used in combination with caffeine. | Usually synthetic. | Yes |
Cobalamin (vitamin B12) | Helping to convert carbs and fat from food into energy. | Bacterial, fungal, or synthetic. | Yes |
Sodium citrate | Acidity regulator | Fruits | Yes |
Potassium sorbate | Preventing the growth of yeast or mould. | Mineral-synthetic | Yes |
Sucralose | Artificial sweetener | Synthetic | Yes |
Caramel E150d | Colouring | Vegetable (usually corn) | Yes |
The table above has been cross-referenced with PETA’s animal-derivative ingredients list. There should be no ingredient that can make you worry here.
Is The Caffeine In Relentless Energy Drink Vegan-Friendly?
The caffeine in Relentless energy drinks is extracted from guarana. It’s a plant from the Amazon basin, so the caffeine in Relentless energy drink is definitely vegan.
Caffeine is the primary ingredient of Relentless energy drinks. It can help you by:
- stimulate and manage the central nervous system
- improve memory
- minimise body fatigue
- enhance exercise performance
If you like to drink around two cups of coffee per day, you can drink one 500ml can of Relentless energy drink instead. This is because it has 160mg of caffeine.
If you like to drink around two cups of coffee per day, you can drink one 500ml can of Relentless energy drink instead. This is because it has 160mg of caffeine.
Another good news is its caffeine amount is way below the daily caffeine limit of 400mg. However, if you exceed the daily caffeine limit somehow, you may experience some health issues.
Overconsuming caffeine can lead to problems like:
- headache
- dizziness
- caffeine dependency
- restlessness
- anxiety
- dehydration
- rapid heart rate
- insomnia
Consuming too much caffeine when you’re tired can also lead to caffeine crashes. You’re likely to experience massive headaches and irritability in this state.
Is There Sugar In Relentless Energy Drink?
Relentless energy drink contains 24g of sugar.
The sugar amount is just below the daily sugar limit. The daily sugar limit is 25g for women and 36g for men.
It means you cannot consume any other sugary products if you consume a can of Relentless energy drink on a particular day.
Otherwise, you may experience sugar-related side effects, such as:
- fatty liver disease
- depression
- addiction
- high blood pressure
- chronic inflammation
- obesity
Is The Artificial Sweetener In Relentless Energy Drink Vegan?
Sucralose is completely vegan. This artificial sweetener is made from sugar using a chemical process.
This artificial sweetener is used in the sugar-free version of Relentless energy drink. It sweetens the beverage while adding only a few calories.
You’ll be amazed to know that sucralose is 600 times sweeter than sugar. Plus, it doesn’t have any bitter aftertaste like ace-K.
Is The Taurine In Relentless Energy Drink Vegan?
Taurine can be found in certain animal foods like meat, fish, dairy. However, the taurine found in energy drinks and supplements is usually made synthetically, suitable for vegans.
Taurine is an essential amino acid, but it doesn’t build protein like other amino acids. It plays various roles in our bodies.
Here are some of them:
- maintains electrolyte balance in our cells
- forms bile salts that play an important role in digestion
- regulates minerals like calcium within our cells
- supports the general function of eyes and the central nervous system
- regulates immune system health and antioxidant function
It’s an essential amino acid and a healthy adult can produce enough for daily functions. However, people who have heart or kidney failure may require higher amounts of taurine.
Taurine has benefits such as:
- improving heart health
- fighting diabetes
- protecting liver cells
- boosting exercise performance
The taurine in Relentless energy drink should be synthetic, so it’s not a cause for worry.
Here’s a short video that can help you know more about taurine.
Is Relentless Energy Drink Healthy?
Energy drinks like Relentless are not really healthy. Still, if you consume them in moderation, they shouldn’t be harmful to you.
You should also remember that energy drinks are not healthy if you’re a minor, pregnant, or nursing. People who are caffeine sensitive should also avoid Relentless energy drinks.
160mg of caffeine is more like two cups of coffee, so you shouldn’t drink it if you can’t handle two cups of coffee.
Otherwise, it may lead to problems like:
- racing heartbeat
- nervousness or anxiousness
- headache
- jitters
- restlessness
- sleeplessness
If you can’t handle 160mg of caffeine, you should build your caffeine tolerance before consuming Relentless energy drinks.
How Many Cans Of Relentless Energy Drink Should You Consume Per Day?

It’s best to consume only one can of Relentless energy drink per day.
Relentless energy drink has a moderate amount of caffeine and a high amount of sugar. It means you’ll clearly exceed the daily sugar limit if you consume more than one can of Relentless energy drink.
Consuming too many sugary energy drinks can cause acute liver injury. Acute liver injury can be pretty bad and may require an urgent liver transplant.
About caffeine, two cans of Relentless energy drink can leave your daily caffeine intake around the FDA limit. So, you may unknowingly exceed the limit by consuming any other caffeinated product.
Don’t forget, chocolate, soda, coffee, and other beverages and food also contain caffeine.
For this reason, you should limit yourself to one serving of Relentless energy drink per day.
Is Relentless Energy Drink Keto-Friendly?
Relentless energy drinks can’t be considered keto-friendly. This is because these energy drinks contain 108 calories and 24g of sugar per can.
In a keto diet, you should consume very low carbs and high amounts of fat. When your body doesn’t get enough carbs, it starts to burn fats efficiently for energy.
This diet is good for losing weight. It can also help you if you have diabetes or heart disease.
Since Relentless energy drink has many carbs, it isn’t suitable for a keto diet. It would help if you looked for sugar-free energy drinks low in carbs while following a keto diet.
What Are The Flavours Of Relentless Energy Drink
You can find these seven flavours of Relentless energy drinks in the market:
- Origin
- Cherry
- Lemon Ice
- Passion Punch
- Zero (sugar-free)
- Mango
- Apple Kiwi
If you’re a fan of fruit-like flavours, you’re likely to love the taste of these flavours.
If you’re looking to try something sugar-free, the sugar-free version of Relentless energy drink will be great for you as well.
Other Vegan-Friendly Energy Drinks
If you want to drink other vegan-friendly energy drinks, you can try these:
The Bottom Line
If you take a closer look at the ingredients of Relentless energy drink, you can see that there aren’t any non-vegan ingredients. The only ingredient that can make you bother is taurine.
However, taurine in energy drinks is usually synthesised. That’s why it’s your choice if you want to drink Relentless energy drink or not.
That being said, Relentless energy drink is definitely a good tasting energy drink with a moderate amount of caffeine. Therefore, if you think it’s the right energy drink for you, remember to drink it in moderation.