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Relentless Energy Drink: Caffeine And Ingredients

Relentless Energy is an energy drink brand created by Coca-Cola. The drink aims to provide a rush of energy whenever your body craves a recharge.

The formula gives an instant boost helping you to perform better both mentally and physically.

A 500ml can of Relentless Energy Drink contains 108 calories, 160mg of caffeine, 24g of sugar, and essential vitamins. The drinks also come in a sugar-free version.

To find out if Relentless Energy Drink is the right choice for you or not, give this article a read.

Relentless Energy Nutrition Facts

Nutritional Facts Of Relentless Energy Drink
Nutritional Facts

This table shows the nutritional value of a 500ml can of Relentless Energy Drink:

NutrientsPer 100mlPer 500ml
Energy22 kcal108 kcal
Of which sugars
Pantothenic Aid1.7mg8.5mg
Vitamin B60.3mg1.5mg
Vitamin B120.4mcg2mcg

Relentless Energy Ingredients


Here is a list of ingredients in a 500 ml can of Relentless Energy Drink:

  • Carbonated water
  • Sucrose
  • Citric acid
  • Erythritol (Flavor enhancer)
  • Taurine (0.4%)
  • Sodium citrate (Acidity regulator)
  • Potassium sorbate
  • Sodium benzoate
  • Caramel E150d (Color)
  • Sucralose
  • Guarana seed extract

Caffeine Content

Caffeine is great for a morning energy boost but it needs to be consumed in moderation

A 500ml can of Relentless Energy contains 160mg of caffeine.

Caffeine is known for its energy-inducing properties. It helps the brain to focus better and makes you physically active and energetic.

Caffeine is also known to help regulate digestion and boost metabolism. Due to its stimulating properties, caffeine is a prominent ingredient in most energy drinks.

However, caffeine is not all good. Large amounts of caffeine intake impact your health negatively.

High doses of caffeine have been related to stomach irritation, restlessness, nervousness, and insomnia.

Side effects may include headaches, chest pain, and anxiety in extreme cases.

But how much caffeine is too much?

The recommended daily intake of caffeine for a healthy individual is 400mg daily and a maximum of 200mg in a single dose.

Make sure your daily consumption of caffeine stays under the recommended daily intake.

How Much Sugar Relentless Energy Drink Contains?

Table sugar
The lesser the sugar, the better the health

A 500ml can of Relentless Energy contains 24g of sugar. It also comes in a sugar-free version.

Sugar adds flavor to the drink and makes it a practical energy source. Most energy drinks are filled with a good amount of sugar to increase the impact of the drink while also enhancing the flavor.

Even though it is a source of energy, consumption of added sugar has been highly criticized by health professionals due to its adverse effects on the body.

The recommended intake of sugar for a healthy adult is 30g. Exceeding this limit can cause obesity, risk of type 2 diabetes, risk of kidney disease, and tooth decay.

To eliminate the risk of side effects, keep track of your overall sugar consumption in a day.

Vitamin Blend

All vitamins are essential for better health!

Essential vitamins in energy drinks enhance your performance by assisting various body functions. These vitamins affect your mental and physical health, helping you stay at the top of your game.

Consuming B-vitamins in excess is not a subject of concern; these vitamins are water-soluble. The excess amount is excreted from your body.

Vitamin B3It helps boost brain function and regulates the fat blood levels
Vitamin B5It helps convert food into energy
Vitamin B12Helps with the formation of red blood cells and supports bone health

Artificial Sweetener

Relentless Energy Drink contains sucralose as an artificial sweetener.

Sucralose, also known as Splenda, is an artificial sweetener that is about 600 times sweeter than sugar.

It is primarily used in sugar-free products as it does not affect blood sugar levels. Since it contains no calories, it does not affect body weight.

Relentless Energy contains a mix of sugar and sucralose to give the drink the right taste and texture.

Even though sucralose is safe to consume, it can harm dental health when combined with sugar.

Other Ingredients

Apart from sugar, caffeine, and vitamins, Relentless Energy drink contains a combination of other ingredients that helps enhance the effects of an energy boost.

These ingredients are added to impact such specific body functions that lead to better exercise performance and increased stamina.

The prominent ingredients in the formula of Relentless Energy Drink are:


  • It is known to impact athletic performance and muscle strength
  • Helps maintain electrolyte balance in the body
  • Strengthens the immune system

Guarana Seed Extract

  • It is rich in antioxidants that help boost cell repair
  • Helps you fight fatigue and improve focus
  • Promotes weight loss

Can You Drink Relentless Energy Every Day?

Relentless Energy Drink
Drink one can every day

Yes, you can drink Relentless Energy Drink every day, but limit your consumption to one can per day.

A single can of Relentless Energy drink contains 160mg of caffeine and 24g of sugar. Excess amounts of these ingredients in your body can lead to harmful side effects.

More than 400mg of caffeine in your diet per day can lead to:

  • Anxiety
  • Insomnia
  • Irregular heartbeat
  • Chest burn

For a healthy adult, more than 30g of sugar can cause:

  • Weight gain
  • High blood pressure levels
  • Risk of key and heart disease
  • Risk of type two diabetes

Drinking more than one can of Relentless Energy will leave no room for sugar through other means.

To avoid the risk of excess sugar intake altogether, you can always go for the sugar-free version of the drink.

How Much Relentless Energy Can You Drink In A Day?

If you are drinking Relentless Energy Drink every day, limit yourself to one can per day.

Regular consumption of caffeine and sugar can cause long-term health problems. These include weight gain, elevated blood pressure, and risk of heart and kidney diseases.

The formula of Relentless Energy contains artificial sweeteners alongside sugar. Consumption of this blend regularly can cause dental problems.

If you are planning to drink Relentless Energy every day, I would recommend opting for the zero-sugar version.

This will give you the needed boost of energy without causing health problems associated with added sugar intake.

For better understanding, watch this review of Relentless Origin:

Where Can I Buy Relentless Energy Drink?

Relentless Energy Drink is available in supermarkets and convenience stores for its UK-based consumers.

For consumers anywhere else, the drink is available on various online shopping sites like Amazon and eBay.

If you are buying the drink online, make sure you compare the prices and delivery charges for various sources and go for the one that costs you the lowest.

You can check their website out to know more about the energy products produced by Relentless Energy.

Does Relentless Energy Actually Work?

can of Relentless Energy drink
Relentless Energy

Relentless Energy contains 160mg of caffeine, 24g of sugar, 108 calories, and essential vitamins.

Apart from this it also contains some energy-boosting ingredients like guarana seed extract and taurine.

This blend of ingredients gives you an instant boost of energy.

You will feel the effect of the drink in about 10 minutes after consumption. The effects last for 1-2 hours before it starts wearing out.

The formula aims to provide you with an energy rush any time of the day.

But I would recommend consuming the drink in the daytime as the caffeine in the drink content might mess with your sleep schedule.

Side Effects Of Relentless Energy Drink?

There are no side effects of Relentless Energy Drink if it is consumed in moderation.

Generally, energy drinks can cause long-term side effects like weight gain, elevated blood pressure, and restlessness. These side effects are a cause of excess intake of caffeine and sugar.

Energy drinks are not an alternative to your diet. Instead, they work as an aid to increase your energy level according to your needs.

If you feel like your lifestyle requires a more significant energy boost than just one can per day, then a sugar-free drink is a better option.

There might be a slight difference in taste, but it is very easy to get used to.

The good news is that Relentless Energy has a sugar-free version for you to enjoy without having to worry about the potential side effects of added sugar.

Is Relentless Energy Drink Good For You?

Safe and Tasty Relentless Energy Drink
Safe and Tasty Relentless Energy Drink

To understand if relentless energy is good for the body, let’s look at this table:

Relentless Energy DrinkDaily Recommended Intake
Calories108 calories2000 calories for women
2500 calories for men

We can see that the caffeine, sugar, and calories are under the daily recommended intake.

This concludes that you are good to go until you are consuming Relentless Energy in an amount that does not exceed the limit for these ingredients.

Like other energy drinks, Relentless Energy drinks give you a temporary energy boost. It is not bad for you if it is consumed within limits


Relentless energy drink is available in the following flavors:

  • Origin
  • Zero (sugar-free version)
  • Mango
  • Lemon Ice
  • Cherry
  • Passion Punch
  • Apple Kiwi


Alternatives to Relentless Energy drink

If you enjoy relentless energy drinks, here are some similar options you might like as well:

Bottom Line

Relentless Energy is a source of an instant energy boost to keep you active and focused whenever your body needs a recharge.

The formula is mainly based on caffeine, sugar, and essential vitamins.

Together with some energy-inducing ingredients, these ingredients help your mental and physical activity keep you energetic for longer hours.

The key is that you consume the drink in moderation.

If you plan to drink more than one can in a day, it is a good idea to switch to the sugar-free version of the drink.

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