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Is Reign Keto-friendly? (Truth)

Reign energy drink, marketed as a “total Body fuel”, is a pre-workout energy drink that contains a blend of natural caffeine, BCAAs, B vitamins, and L-Arginine.

All flavors of Reign energy drink
All flavors of Reign energy drink

It is a performance energy drink with zero sugar and fewer calories. The natural caffeine sourced from green coffee beans provides continuous energy throughout your workout.

With all these plus points comes the main question, “Is Reign Energy Drink OK for a keto diet?”

Short answer: Yes, Reign energy drink is keto-friendly! If you are on a keto diet and looking for a low-carb energy drink, then you are at the right place! So before you grab a can, read the details below to discover more about it!

What is Ketosis?

Ketosis is a metabolic state where your body goes into when it’s low on carbs and has to turn to fat for fuel.

Ketosis happens when your body doesn’t have enough carbohydrates to fuel all its energy needs. When fat and protein can’t supply enough calories, the body breaks down fat and protein into molecules called ketones.

In ketosis, the body uses ketones for fuel. You can get into ketosis on your own by following a diet that’s very low in carbs but moderate in protein.

The liver makes ketones from fat. These then circulate in the bloodstream and are taken up by tissues, including brain cells.

Once formed, these ketones can be used to fuel your brain cells, which means they can support cognitive function, improve alertness, and help reduce seizures in people with epilepsy.

The key to a successful ketogenic diet is keeping carbohydrate intake low enough so that your body goes into ketosis and starts producing these ketone bodies that then serve as fuel for your metabolism.

Benefits of a Ketogenic Diet?

a person eating eggs with fork and knife
Food from a ketogenic diet.

The ketogenic diet can prove to be an ‘anti-inflammatory’ way of eating if it is performed correctly. Consuming carbohydrates increases our blood sugar and this produces inflammation in the body.

A ketogenic diet is beneficial as it can:

  1. Lower blood sugar and ultimately inflammation, and lower the risk of metabolic syndrome and problems linked with it.
  2. Control your appetite – ketosis affects ‘hunger’ hormones and makes you feel full for longer. On the other hand, consuming a lot of carbohydrates have the opposite effect.
  3. Help with weight loss.
  4. Improve physical stamina
  5. Support memory
  6. Improve mood, immunity, sleep, anxiety, and overall feeling of wellbeing.

What Foods to Eat in Ketogenic Diet?

You can consume the following foods while you are on a ketogenic diet:

  1. Eggs
  2. Cheese
  3. Nuts
  4. Butter
  5. Cream
  6. Meat 

What Foods to Avoid in Ketogenic Diet?

You should avoid the following foods if you are on a ketogenic diet:

  1. Alcohol
  2. Sauces
  3. Grains
  4. High sugar foods
  5. Starch

Reign Energy Drink Ingredients list

Reign Energy drink contains the following ingredients:

  1. Carbonated Water
  2. Caffeine
  3. Citric Acid
  4. Sodium Citrate
  5. Natural Flavors
  6. L-Isoleucine
  7. L-Valine
  8. L-Leucine
  9. Sodium Benzoate
  10. Sucralose
  11. Potassium Citrate
  12. Potassium Sorbate
  13. Acesulfame K
  14. Magnesium Lactate
  15. Coenzyme Q-10


  1. Niacinamide (Vitamin B3)
  2. Cyanocobalamin (Vitamin B12)
  3. Pyridoxine Hydrochloride (Vitamin B6)

Nutritional factsmof Reign Energy

nutrition facts of Reign energy drink
nutrition facts of Reign energy drink
NutritientsAmount per serving (16fl.oz)
Energy10 calories
Vitamin B3 (Niacin)21.6mg
Vitamin B62.0mg
Vitamin B126.25μg
nutritional facts

Reign Energy Caffeine Content

A single 16 fl oz can of Reign energy contains a whopping 300 mg caffeine resourced from green tea leaves.

With this much amount in a single can, it sure has very high caffeine compared to its competitors.

As a pre-workout energy drink, this amount of caffeine enhances workout efficiency and keeps you fully charged throughout your exercise regime.

However, 300 mg can be too much for caffeine-sensitive individuals. It can cause a nasty headache or jitters, or even sleeping problems. So it is better to test your tolerance to caffeine and then opt for a full can.

Try to restrict your caffeine consumption to a comfortable level and avoid drinking too many caffeinated beverages at once, especially if you have a can of Reign on hand.

The FDA suggests that you should limit your regular caffeine intake to less than 400 mg, since more can result in serious effects on your health, including:

You can see non-caffeinated energy drink options to reduce fatigue and enhance performance without worrying about caffeine overdose.

Calories in Reign Energy Drink

Reign energy contains only 10 calories per can, not disrupting your caloric intake.

All these 10 calories come from non-sugar sources, which means they will not affect your weight loss journey.

These caloric values are based on a 2000 calorie diet as recommended by the FDA. FDA uses it as a general guide for daily caloric intake for a healthy adult.

So if you are consuming 10 calories by one serving of Reign, then it will not make much difference in your daily caloric intake.

So, the key to a healthy weight is maintaining the balance between the number of calories you eat with the number of calories you burn. Eating excessive calories can cause obesity.

Does Reign Contain Sugar?

No, Reign does not contain sugar, but its sweetness comes from artificial sweeteners sucralose and acesulfame K.

So it is a healthier alternative to sugary drinks, and you will not get any bad calories from it. Reign will not give you a sugar crash after drinking it due to no added sucrose.


According to ScienceDirect, sucralose is a low-calorie, high-intensity sweetener 600 times sweeter than sugar. It is marketed under the brand name ‘Splenda.’ Sucralose and sucrose (sugar) have comparable taste and flavor qualities.

Acesulfame K

The FDA has declared acesulfame potassium to be “generally recognized as safe.” Acesulfame stimulates the sweet-taste receptors on the tongue, allowing a person to enjoy the taste of sweetness without taking sugar.

Acesulfame potassium is typically combined with other sweeteners such as aspartame and sucralose.

Here is a video about keto-friendly sweeteners:

A video about keto-friendly sweeteners

Is Reign Keto-Friendly?

Yes, Reign is keto-friendly.

With just 10 calories and only 3g carbohydrates, Reign can be your partner during your keto diet.

It gives you the energy you need after a Monday afternoon or a lazy morning shift. Not to mention the advantages of BCAAs for muscle repair, 0 sugar, and 100% of your daily B3, B6, and B12 requirements in one can.

Most energy drinks contain more sugar than soda. There are some low-carb and zero-carb energy drinks available on the market too but just because the carton says “low-carb” doesn’t guarantee that it will fit under your daily carb allowance.

Always read labels thoroughly, especially when buying energy drinks. Whatever diet you follow, your basic refreshments should be zero-calorie liquids like water, coffee, tea, and sparkling water.

How Many Cans of Reign Can You Drink in a Day?

I recommend you not to drink more than one can of reign energy in a day. Since reign contains a whopping 300 mg of caffeine, which equals 3 cups of coffee, it can be harmful to caffeine-sensitive individuals.

Limiting it to one can per day is reasonable and safe even if you are tolerant to a high amount of caffeine. Excessive caffeine consumption can cause:

  1. intoxication
  2. bone loss in elderly women
  3. irregular heart palpitations
  4. hypertension

Here is a list of energy drinks for hypertensive people. You can consume these energy drinks without worrying about your blood pressure but be moderate!

Is Reign Good for You?

Yes, Reign contains all safe ingredients.

B vitamins and BCCAs provide an energy boost during your workout sessions.

L-leucine, L-isoleucine, and L-valine are the most often utilized amino acids. These amino acids aid in muscle protein synthesis (MPS) and recuperation. Hence, it is a good nutrient booster in a keto diet.

But the caffeine amount is alarming. It is not recommended for caffeine sensitive, pregnant or breastfeeding women, and those under the age of 18. This product is only suitable for healthy adults, that too in moderation.

If you take any medication or have a pre-existing medical condition, see a healthcare practitioner before drinking Reign or any other energy drink.

You can also consume healthy energy drinks to avoid any side effects of excess caffeine or sugar.


  1. Monster
  2. Redbull
  3. Redline

Other notable mentions

  1. Bang Energy Drink
  2. Rockstar
  3. 5 Hour Energy

Final thoughts

Reign is no doubt a good option for a keto-friendly drink. If you’ve ever had Bang, Reign has a similar taste profile to Bang. Sweet, tangy, with mild carbonation.

If you prefer these kinds of pre-workout energy drinks, I’d say it’s worth a go, but be warned: it contains around double the caffeine level of a standard Monster in a single can.

Keto-friendly, low-carb energy drinks are an emerging trend and a need for fitness enthusiasts but making it a part of your lifestyle is not healthy at all.

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  3. How Bad Is Bang Energy? (Truth Revealed)