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Relentless Energy Drink Nutrition Facts (Overview)

Relentless Energy Drink Nutrition Facts (Overview)

Relentless is an energy drink that’s established in 2006 under the Coca-Cola Corporation. It’s a good drink for stamina boosting, memory focus, and many more. But, what exactly does it offer?

Relentless Energy Drink comes in a 500ml can, containing 160mg of caffeine, 24g of sugar, and 108 calories. You can also enjoy the smart blend of ingredients in a can of Relentless, having guarana extract, B vitamins, taurine, and other essential flavours.

Relentless Energy Drink is pretty common in the United Kingdom, so you can easily find a can to get a quick boost and a feeling of alertness. To find out more about the nutrition facts of Relentless and how it affects your body, read on.

Nutritional Value Of Relentless Energy Drink?

The nutritional value of Relentless energy drink is one of the primary reasons for the energy boost you get every time you take a sip. It also keeps you mentally alert and improves your overall physical performance.

One serving of Relentless Energy drink is 500ml, and it’s composed of the following nutritional value:

  • 160mg caffeine
  • 24g sugar
  • 108 calories
  • 31g carbohydrates
  • 0.14g salt
  • 16mg niacin (vitamin B3)
  • 2.0µg cobalamin (vitamin B12)
  • 8.5mg pantothenic acid (vitamin B5)
Relentless Energy Drink ingredients and nutritional value at the back of a can.
Relentless Energy Drink Ingredients and Nutritional Value.

Ingredients Of Relentless Energy Drink

In terms of ingredients, it contains:

  • Carbonated Water
  • Citric Acid
  • Sucrose
  • Erythritol (Flavour enhancer)
  • Taurine
  • Potassium sorbate
  • Sodium citrate (Acidity regulator)
  • Sodium benzoate
  • Caramel E150d (Color)
  • Guarana seed extract
  • Sucralose

The ingredients in Relentless energy drink are pretty common amongst energy drinks in the market. Look down below as I’ll go into some of the more major ingredients in Relentless to help you understand the components of the beverage that you consume.


Taurine is an essential amino acid that is produced in your body. It’s essential in managing concentration in the brain, muscles, eyes, and heart.

Relentless energy drink is composed of 0.4% of Taurine, and its benefits includes:

  • Improving digestion
  • Managing minerals within the cells
  • Maintaining the balance of your electrolytes
  • Supporting your central nervous system
  • Additional energy for Physical Activity


A cup of coffee.
Caffeine is present in coffee too.

Caffeine is the primary ingredient in every energy drink on the market. It serves like gas in a car, and without it, it might not be the same anymore. It gives you an energy boost that you need to survive all day.

Caffeine helps you improve the following:

  • Stimulates and manage the central nervous system
  • Improve mental processes and memory
  • Minimizes body fatigue

A 500ml of serving of Relentless energy drink can give you 160mg of caffeine, which is enough to give you the kick you need to stay alert and awake. That said, 160mg is a little higher than what I would recommend, so proper management of consumption and control is essential.

According to the Food and Drug Authority (FDA), the daily limit for caffeine consumption is 400mg. If you exceed more than the limit, you might suffer from health risks. Excessive consumption of caffeine can build negative side effects like:

  • Headaches
  • Dizziness
  • Restlessness and shakiness
  • Abnormal Heart Rate
  • Anxiety
  • Dehydration
  • Insomnia
  • Addiction and Dependency

Excessive consumption of caffeine can also lead to a caffeine crash. Check out the article here to learn more about the very topic and how to deal with it.


B-Vitamins are one of the building blocks of your body. It helps manage your body and directly impacts your energy, metabolism, and brain function.

In general, B-Vitamins assist you in preventing infections, and helps you support the following:

  • Energy levels
  • Improve eyesight
  • Red blood cells management and production
  • Nerve function
  • Muscle tone
  • Cell Health
  • Improve metabolism and digestion

The table below shows the uses and functions of each B-Vitamins:

Uses and Functions
Vitamin B1 (Thiamin)It helps your body convert carbohydrates into energy. It also improves your metabolism and plays an important role in your overall nerve, heart, and muscle function.
Vitamin B2 (Riboflavin)It breaks down the food that you eat and converts it into energy. It helps you absorb essential nutrients, and maintain healthy tissues.
Vitamin B3 (Niacin)It helps you convert the food that you eat into energy. It also assists you in managing the protein and fats in your body. It keeps your nervous system, hair, and skin healthy.
Vitamin B5 (Pantothenic Acid)It helps your body break down carbohydrates and fats and convert them into energy. It promotes and improves your liver, hair, eyes, and skin.
Vitamin B6It primarily works for your body’s metabolism and central nervous system. It also helps your body convert the food that you eat into energy.
Vitamin B7 (Biotin)It assists your body in breaking down fats, protein, and carbohydrates. It also helps in lowering your glucose level.
Vitamin B9 (Folate)Folate provides your body with essential nutrients. It helps your body maintain a proper and healthy heart. It also lowers the risk of depression and congenital deformities.
Vitamin B12It’s a vitamin that works primarily in maintaining healthy nerve tissues. It also assists in the production of red blood cells.
Summary of the roles and functions of B-Vitamins

Guarana Seed Extract

Guarana is a plant from the Amazon basin and it’s often used for medicinal purposes as it’s known to have therapeutic properties. Here’s a list of the benefits that you can get from Guarana seed extract:

  • Provide antioxidants
  • Reduce body fatigue and improve your focus
  • Improve your memory
  • Antibacterial properties
  • Promote weight loss

Relentless Energy Drink Sugar Content

A serving of Relentless energy contains 24g of sugar.

Sugar is a common ingredient in the food and beverage that you consume. It gives you energy and manages your body’s function. It’s food for your brain, and it assists your central nervous system.

For reference, here’s a table showing the National Health Service (NHS)’s advised daily consumption limit of sugar:

Sugar Limit
Adult30g or 7 cubes of sugar
Children aged 7-1024g or 6 cubes of sugar
Children aged 4-619g or 5 cubes of sugar
Daily Sugar Consumption recommended by NHS

Given the figures above, it’s safe to have one serving of Relentless energy drink a day. Having more than that can result in a sugar crash and other different health issues, such as:

  • Obesity
  • Heart Disease
  • Diabetes
  • Weight Gain
  • Skin Aging
  • Body Fatigue
  • Dental Cavities
  • Fatty liver and kidney disease
  • Depression
  • Development of cancer
  • Gout

Again, moderation and control are the keys to managing your body. Understanding what your body can and cannot do can help you improve your overall body function.

That said, if you’d like to completely do without the sugar, check out this article here where I’ve listed some of the best sugar-free energy drinks.

Is The Caffeine Content Of Relentless Energy Drink Safe?

In every 500ml can of Relentless energy drink, you get 160mg of caffeine, which is a moderately large amount of caffeine for one serving.

I generally go for energy drinks that have between 50mg to 100mg per serving as it gives me the boost I need while minimizing the possibility of energy drink addiction.

Taking everything into account, Relentless energy drink’s caffeine content is manageable as long as you stick to having one can a day. Drinking two cans can lead to excessive caffeine and build dependency. It can also affect your overall daily function.

The right choice for this is knowing what your body can handle. Remember, your caffeine tolerance and sensitivity may vary, so checking your own limit can give you a heads up on what you can handle.

Are There Any Health Risks To Drinking Relentless Energy Drink?

Relentless energy drink is safe if you consume it in moderation and within your body’s limits. You will encounter health risks if you consume in excess.

I would recommend limiting your intake of Relentless energy drink to one can a day. Having one serving a day would prevent you from experiencing any caffeine and sugar-related side effects while giving your body enough energy to stay alert and motivated all day.

Does Relentless Energy Drink have Health Warnings?

You will notice a health warning at the back of a can of Relentless Energy Drink:

Health warning of Relentless Energy Drink
Health warning of Relentless Energy Drink

The warning states that High Caffeine Content. Not recommended for children, pregnant or breastfeeding women, or people sensitive to caffeine. Consume Responsibly.

As stated, its caffeine content is not advisable for pregnant or breastfeeding women. It can also be dangerous for caffeine-sensitive individuals. That said, if you don’t fall into the aforementioned categories, I think having one can of Relentless Energy Drink would be alright.

All in all, manage your consumption responsibly.

If you’re still concerned about the health issues related to Relentless Energy Drink, check out the video below for another opinion on Relentless Energy Drink:

Relentless Energy Drink Reviews

REIZE (10 out of 10)

A glass of REIZE energy drink.
REIZE is the Best

If you want a boost that can help you survive through the day without worrying about the sugar crashes and side effects of caffeine, then REIZE is for you.

REIZE comes in a 4g sachet and is a powdered energy drink. It contains 50mg of caffeine, 11 calories, and completely sugar-free. It gives you an extreme boost that can go along with your body needs.

REIZE is also made of a smart blend of taurine, ginseng, and B vitamins. It’s a smart choice for your diet, an improvement in physical performance, and even for your productivity. It offers nutrients that your body needs.

Best of all, you can have REIZE delivered right to your doorsteps for only about $1 per serving. It’s good value for your money!

Try REIZE today, and you might find it a better experience than Relentless Energy Drinks.

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