Zero Carb IsoPure Review: The Most Healthiest Protein Powder?

by Nader Qudimat
Updated June 15, 2023
Release Date
Serving Size
Super Easy To Find
Zero carbs, high quality protein
Easily digestible (no bloating)
 Easy to mix and drink
Flavors could be better
Excellent for lactose intolerant users (no lactose)
10g of BCAA's and 4.6g of glutamine added
Perfect for leaning and increasing your protein count without carbs/fats
 $1 per serving (25g protein, not bad)

Bottom Line

Whether you're dieting or just want pure protein, Isopure makes the best low calorie protein supplements.  

Every scoop is packed with 25g of protein, 5g of BCAA's, and 2.3g of glutamine, and of course zero carbs. 

However this protein powder becomes harder to find so we recommend Transparent Labs Isolate is the best alternative. 

They are both low carb, and isolate protein powders with natural flavoring. 

What if I told you there's a protein powder that gives you all the muscle-building fuel you need, without a single carb in sight?

Sounds too good to be true, right?

Enter Zero Carb Isopure, the protein powder changing up things.

They have BCAA's, glutamine, and whatever else they add to make it look special and unique.

But maybe, just maybe, this one protein powder is different than the rest.

The one in question is Zero Carb IsoPure by Nature's Best.

(Recommended: Best Clear Whey Isolate Powders)

This product has caught our attention recently, as some of our readers have been asking for a review.

And whatever they did to make this a super popular protein powder doesn't matter as much as the question, “Is IsoPure worth getting and how's it compare to other protein powders?”

Hold your horses, we'll answer all your questions in a bit…

What is Zero Carb IsoPure?

Traditionally, protein powders have the traditional macros; fats, carbs and protein.

But IsoPure here gives you 50g of protein, zero carbs, and 1g of fat per 2 scoops (1 serving).

It's an ideal powder for those who are leaning out, cutting fat and shredding away to show off their hard earned muscle.

Or just to keep their diet “clean” from carbs.

While the servings seem low, it's actually not. If it says 22 servings, then you're actually getting 44 servings because there's really no need to get 50g of protein in one sitting unless you're a 250lb shredded monster.

Not to mention the generous amount of BCAA's you get.

So really you're paying around $1.00 per serving for pure, whey isolate protein.

What Makes Zero Carb IsoPure Special?

There's a few things that make this one stand out from other protein powders:

  • 50g of Protein Without any Carbs at all
  • Generous Dosages of BCAA's included
  • Glutamine for Recovery and Muscle Growth
  • Uses High Quality Protein
  • Great for Lactose Intolerant Users
  • $1 Per Serving (For Pure Protein)

They didn't just leave it there though, Nature's Best included 10g of BCAA's (Check out our buying guide for BCAA‘s) and a couple grams of glutamine for extra recovery and muscle growth.

If you're looking for a mass gainer, or if you want to see our top 10 protein powders or if you're after a pre workout and you can through our buying guide).

The flavors are creative, but only some are tasty.

Zero Carb IsoPure makes it easy to get your protein up without messing with your carb / fat intake.

If you're after that lean look or you're trying to lose fat, or you simply just want to keep it zero carb, then you'll love IsoPure. ​


Most whey protein supplements will have isolate, concentrate and other forms of protein but Isopure Low Carb has only one source of protein, which is isolate. 

With Whey Isolate being the first in the list, a good sign to see, it's what this product is mostly made out of.

It also has vitamins, minerals and not to mention BCAA's and glutamine so you'll always be at the top of your diet with this powder.

There is a few artificial flavoring and one sweetener involved, but that's really it. Usually protein powders have multiple flavoring, sweeteners and perspectives but this doesn't even have ​acesulfame potassium (basically aspartame).

It does have soy and sucralose.

Overall it's healthy, full of ingredients that'll not only help maintain muscle but increase it as well.​

Protein Forms

  • Ion Exchange Whey Protein Isolate
  • Microfiltered Whey Protein Isolate

As you can see, there are two forms of protein included in this protein powder. 

So what's the difference between ion-exchange and microfiltered?

On a gram for gram basis, ion-exchange filtered protein yields more protein, less fat and lactose out of the other methods but it isn't the best way to extract protein as it has a few disadvantages.

For one noticeable downside, some amino acids are denatured during the process, like alpha lactalbumin and immunoglobins. ​

And for microfiltered…

It filters the whey using high tech ceramic membranes, while using no chemical regents at all.

So the advantage of this process is that you get whey with a better amino profile and more likely to have preserved biological fractions.

Basically you're getting protein that has completely no carbs, but also has a great amino profile.

Sounds awesome doesn't it?​

With 50g of protein and 10g of BCAA's, you'll definitely make some gains.


With 50g of protein per serving, and zero carbs, and a jam packed dose of BCAA's (10g) you'll no doubt experience less soreness and much faster recovery (and growth).

Since it stimulates protein synthesis, it'll also increase recovery, decrease soreness and fight off catabolism so you keep growing and maintaining your gains. (See our BCAA buying guide if you're looking for BCAA supplements).

Since there are no carbs, you can better control your macro's without going overboard on fats and carbs.

This will do much more than your average protein powder, especially because it has added BCAA's and glutamine. ​

Taste and Texture

Most people go after protein powders (and supplements in general) because of the taste, or they heard it is just flavorful.

You may go after IsoPure thinking it'll be the best thing ever.

And you're not wrong.

For a protein powder that has zero carbs, the flavors are super creative and full of life. Literally.

The cookies and cream especially will taste like a Oreo smoothie. Except without the extra crap (like aspartame).

So if you're dieting, or just looking for something that has zero carbs, you'll most likely get addicted to the flavor. ​

Universial Nutriton has taken part of the “no-spiking” trend, thankfully, and has provided a weight gainer that truly lives up to its claims.

Pricing and Flavors

So what do you get from IsoPure?

Here it is:

  • 50g of Protein Without any Carbs at all
  • Generous Dosages of BCAA's included
  • Glutamine for Recovery and Muscle Growth
  • Uses High Quality Protein
  • Great for Lactose Intolerant Users
  • $1 Per Serving (For Pure Protein)

There's a wide range of flavors and this is what we think of them:

  • Alpine Punch (Ok)
  • Apple Melon (blah)
  • (Banana Cream (Yum!)
  • Cookies And Cream (Yum!)
  • Creamy Vanilla (ok)
  • Low Carb Dutch Chocolate
  • Low Carb Toasted Coconut (Yum!)
  • Mango Peach (Ok)
  • Mint Chocolate Chip (Nah)
  • Pineapple Orange Banana (ok)
  • Strawberries And Cream (not bad)

As you can see, you're never short on flavors.

But not all of them are that great.

The great ones are the ones with the “Yum!” and the bad ones say “Blah”, it's pretty self explanatory. ​

The Upside of Zero Carb Isopure 

Zero Carb Isopure isn't just a one-trick pony. It's packed with features that make it a standout choice in the world of protein powders.

  • High-Quality Protein: Zero Carb Isopure uses whey protein isolate, one of the purest forms of protein available. This means you're getting a high-quality, easily digestible protein perfect for muscle recovery and growth.

  • Zero Carbs: As the name suggests, Zero Carb Isopure contains absolutely no carbs. This makes it a perfect choice for those on low-carb or ketogenic diets, or anyone looking to reduce their carb intake.

  • Lactose-Free: Lactose intolerance can make finding a suitable protein powder a challenge. Thankfully, Zero Carb Isopure is 100% lactose-free, making it a great option for those with this common dietary restriction.

  • Vitamin and Mineral Blend: Zero Carb Isopure isn't just about protein. It also contains a blend of vitamins and minerals to support overall health and wellbeing.

Benefits of Using Zero Carb Isopure

Using Zero Carb Isopure comes with a host of benefits. Here are just a few:

  • Muscle Growth and Recovery: With 50g of protein per serving, Zero Carb Isopure is a powerhouse for muscle growth and recovery. Whether you're looking to bulk up or maintain your current muscle mass, this protein powder has got you covered.

  • Supports Low-Carb and Ketogenic Diets: If you're on a low-carb or ketogenic diet, finding a suitable protein powder can be a challenge. Zero Carb Isopure makes it easy, with zero carbs per serving.

  • Lactose-Free: For those with lactose intolerance, Zero Carb Isopure is a game-changer. No more bloating or discomfort – just high-quality protein in a lactose-free formula.

  • Packed with Vitamins and Minerals: Zero Carb Isopure isn't just a protein powder. It's also a great source of essential vitamins and minerals, supporting your overall health and wellbeing while you build muscle.

Potential Drawbacks

While Zero Carb Isopure is a fantastic protein powder, it's not without its potential drawbacks. Here are a few things to keep in mind:

  • Taste: Some users find the taste of Zero Carb Isopure to be less than stellar. However, taste is subjective, and what one person dislikes, another might love.

  • Price: High-quality protein comes at a price, and Zero Carb Isopure is no exception. This protein powder is a bit pricier than some other options on the market. However, for many, the benefits outweigh the cost.

  • Availability: Depending on where you live, Zero Carb Isopure can be hard to find. However, it's readily available online from various retailers.

Comparison With Other Products

Zero Carb Isopure is a standout product, but how does it compare with other protein powders on the market? Let's take a look.

  • Transparent Labs Grass-Fed Whey: This protein powder is another high-quality option, boasting grass-fed whey protein and a clean ingredient list. However, it does contain a small number of carbs, making Zero Carb Isopure the better choice for those on strict low-carb or ketogenic diets.

  • Other Lactose-Free Protein Powders: There are other lactose-free protein powders on the market, but few can match Zero Carb Isopure's impressive protein content. If you're lactose intolerant and looking to maximize your protein intake, Zero Carb Isopure is a fantastic choice.


Is Zero Carb Isopure suitable for vegans?

No, Zero Carb Isopure is not suitable for vegans as it contains whey protein, which is derived from milk.

Can I use Zero Carb Isopure if I'm lactose intolerant?

Absolutely! Zero Carb Isopure is 100% lactose-free, making it a great choice for those with lactose intolerance.

How does Zero Carb Isopure taste?

Taste is subjective, and opinions on Zero Carb Isopure's taste vary. Some users love it, while others find it less than stellar.

Is Zero Carb Isopure expensive?

Zero Carb Isopure is a bit pricier than some other protein powders on the market. However, many users find the high-quality protein and zero carb content to be worth the extra cost.

How much protein does each serving of Zero Carb Isopure contain?
Each serving of Zero Carb Isopure packs a whopping 50g of protein, making it one of the highest protein content options on the market.

Is Zero Carb Isopure gluten-free?

Yes, Zero Carb Isopure is gluten-free, making it suitable for those with gluten intolerance or celiac disease.

Can I use Zero Carb Isopure for weight loss?

Yes, Zero Carb Isopure can be a great addition to a weight loss diet due to its high protein and zero carb content. However, it's important to remember that overall diet and exercise are key factors in weight loss.

Does Zero Carb Isopure contain any artificial sweeteners?

Yes, Zero Carb Isopure contains sucralose, an artificial sweetener. If you're avoiding artificial sweeteners, you may want to consider other protein powder options.

Can I use Zero Carb Isopure if I'm not on a low-carb or ketogenic diet?

Absolutely! While Zero Carb Isopure is especially beneficial for those on low-carb or ketogenic diets, it can be a great protein source for anyone looking to increase their protein intake.

How should I prepare Zero Carb Isopure?

You can mix Zero Carb Isopure with water, milk, or your favorite beverage. For best results, use a blender or a shaker bottle to ensure the powder is fully dissolved.

Can I use Zero Carb Isopure as a meal replacement?

While Zero Carb Isopure can help you feel full and can contribute to your daily protein intake, it shouldn't be used as a complete meal replacement. It's important to consume a balanced diet with a variety of foods to ensure you're getting all the nutrients your body needs.

Isopure: One Of The Best Isolate Protein Powders

For 50g of protein and zero carbs, this has to be one protein powder to keep in the cabinet for the leaning out days. 

You won't need the whole 50g, so you'll actually get twice the said servings on the bottle.

There's also the added BCAA's and glutamine to further maintain and increase overall growth and performance.

There's really no reason not go with this.

And some of the flavors are extremely tasty.

IsoPure is definitely one of the best zero carb protein powders you can get.  

by Nader Qudimat

Forged by iron and cold steel, I'm Nader, a mid-30s natural bodybuilder. Once a 100lb skinny guy, I've transformed into a 200lb muscular athlete with over 15 years of lifting experience. Today, I leverage my transformation and extensive experience to guide countless individuals on their fitness journeys.

Click here to check out my 12 year transformation: Natural 12 Year Transformation

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