100% Whey Protein Isolate

100% Whey Protein Isolate

100% Whey Protein Isolate For Supporting Muscle Growth*
25 Grams Of Protein Per Serving
9.2 out of 10 (18 Reviews)
1 Size
2 Lbs.
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5 Flavors
Chocolate Peanut Butter
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Price: $39.99 ($1.38 / Serving)
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Product Overview

Third Party Lab Test Results

Please enter the lot number found on the bottom of your bottle of NutraBio supplements.


What are 3rd Party Lab Tests?

Each and every single ingredient that NutraBio puts in their supplements are rigorously tested for quality and purity. NutraBio is now publicly releasing the results of 3rd party lab tests conducted on their products, so that you can see for yourself how your supplements checked out!

View the date your item was tested, the results of the test, and even the name of the chemist that conducted the test.
Full transparency!

You can view a copy of the results by entering the lot number, located on the bottom of each bottle of NutraBio supplements into the form above.


  • Fast acting to support repair & recovery
  • Over 5g BCAAs per serving
  • NON-GMO & No fillers or excipients.
  • No soy, lactose, gluten, or hormones
  • No proprietary blends & full label disclosure










NutraBio Whey Protein Isolate is guaranteed to be the absolute cleanest protein available. Each serving contains 25 grams of complete protein derived solely from 100% Whey Protein Isolate. It is fat-free with less than 1 gram of carbs making it the perfect choice for low-carb dieters or athletes who want to get ripped while packing on muscle. Our Whey Protein isolate contains no whey concentrate, added carbs, creamers or any other filler, just pure cross-flow ultra-filtered, non-denatured whey. It has a high biological value with an advanced full-spectrum amino acid profile that provides optimum nitrogen retention and protein synthesis to accelerate muscle growth and repair.


Whey Protein is well known as the most powerful source of protein for building muscle. However, there are different types of whey; the most common are Whey Protein Isolate and Whey Protein Concentrate. Whey Protein Isolate is 90% protein by weight and is the purest form of whey that exists, which is why it’s the only protein we use in this product. Whey Protein Concentrate is a cheaper grade with 11% less protein than whey isolate and a lot more fat, cholesterol and lactose. NutraBio’s Whey Protein Isolate contains only Whey Protein Isolate with absolutely NO whey concentrate or other proteins.

Founded in 1996, NutraBio is the original No Proprietary Blend, No B.S. honest brand. 15 years ago we revolutionized the supplement industry by introducing 4 quality commitments:

1. NO proprietary blends and full label disclosure

2. NO fillers, excipients, or additives (except flavor)

3. Full therapeutic dosages of every active ingredient

4. Manufacturing our own products to control every aspect of quality.

Two decades ago we set the goal of providing our customers with the most effective, clean and honest supplements available. Since that very first day, we have led the charge in supplement innovation with science-backed therapeutic doses and full label disclosure.

We manufacture our products in our FDA registered and audited facility. We are GMP certified and manufacture to exceed 21 CFP Part 111 cGMP regulations. We don't compromise on quality so you don't have to compromise on results.

PLEASE NOTE: View the supplement facts panel tab for a current version of the ingredients.

100% Whey Protein Isolate with Absolutely Nothing Else.

NutraBio Whey Protein Isolate contains 100% Whey Protein Isolate only! There is No whey concentrate or other proteins, maltodextrin, dextrose, creamer or any other filler in this product. It is lactose free, fat free, cholesterol free, gluten free, BSE/TSE free, filler free, excipient free, non-denatured and kosher. These days, the market is flooded with protein brands and to compete companies use confusing labels and deceptive claims to hide cheap ingredients in their products. It’s almost impossible for the consumer to figure out what they are really getting. We make it simple by providing full label disclosure. We never hide cheap ingredients in deceptive proprietary blends. Our labels are simple, honest and disclose every single ingredient along with the exact dosage. Our label doesn't state "100% Whey", it states "100% Whey Isolate" so our unflavored version contains absolutely nothing but whey protein ISOLATE, and out flavored versions contain a small amount of flavoring, that’s it.

To Make the Best Protein You Must Start With The Best Ingredients:

Our factory fresh whey protein isolate (WPI) contains 25 grams of pure protein per scoop and is lactose free, fat free and cholesterol free with less than 1 gram of carbs making it the perfect choice for low-carb dieters or athletes who want to get ripped while packing on muscle. Our WPI is 100% pure, non-denatured, non-acid treated whey isolate with absolutely no whey concentrate, ion exchange, or other cheaper forms of protein blended in. Whey protein isolate has the best overall amino acid profile, biological value and protein efficiency for building muscle. Adding anything else to it just takes away the benefits you should be getting from your hard work, so we don't. No games, no tricks just the purest, freshest whey isolate available.

High Biological Value & Protein Efficiency:

You've just chosen the world's leading muscle building protein designed specifically for individuals needing the highest quality protein. This protein has a Biological Value of 159, Protein Digestibility of 95, Protein Efficiency Ratio of 3.6, Net Protein Utilization of 92, and a perfect 1.0 PDCAAS (Protein Digestibility Corrected Amino Acid Score).

Advanced Complete-Spectrum Amino Acid Profile:

Rich in Branched Chain Amino Acids. Provides the perfect profile of Essential, Non-Essential, and Conditionally Essential amino acids that your body requires for optimum nitrogen retention, protein synthesis and muscle growth.

High in Glycomacropeptides:

Contains approximately 18% GMP (glycomacropeptides), while ion-exchange whey isolate contains none.

Ratings & Reviews

Overall Rating
18 Ratings
Verified Buyer Rating
5 Ratings
Average Flavor Rating
5 Flavors
Top Rated Flavor
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
  • 8 Cinnnamon Bun

Being an isolate, this is on the thinner side, but the flavor is still there. I dont find it crazy overpowering, but its strong enough for you to know that its a Cinnamon Bun. The aftertaste, crazy as this may sound, is my favorite part. The mouth feel and aftertaste are probably the best that ive had in an isolate. Another homerun for Nutrabio

  • 9 Dutch Chocolate

this 100% Whey Protein Isolate is a super clean, top of the line product. i love the full transparency and 3rd party testing. No soy, lactose, gluten, or hormones...just a pure product from grass fed sources. i got the Dutch Chocolate flavor and like all Iso's, it mixed up on the thin side with a light flavor. no clumping or residues at all. this is super solid product with a profile and formulation that can stand on its own against any product in its class!

  • 10 Cinnnamon Bun

I couldn't ask for a cleaner protein powder and if you look at the label, the full disclosure, including the sweeteners, is on a whole different level from anything else on the market. If you are looking for a very clean formula that is going to give you exactly what the label says, NutraBio is the way to go. The powder is really fine and mixes great with either water or into something like oats. It's very versatile and the highest-quality isolate I have ever used.

  • 8 Dutch Chocolate
  • 6 Wild Strawberry

NutraBio is one of those companies that really puts it all out there for everyone to see. Their whole line is open, and what you see is what you get. In this sense, their 100% Whey Protein Isolate is no exception. With a third party validated label, this protein is not hiding anything that the label doesn't list. In fact, they even list the amount of flavoring they use. Speaking of flavor, you should never really expect an isolate have as strong of a taste as a blend. Isolates are generally thinner, and also lower in calories (NutraBio's version are all 110 calories per serving). The two flavors I've had from this line were Dutch Chocolate and Wild Strawberry. The Dutch Chocolate was pretty close to it's name, featuring a smooth chocolate profile without any bitter aftertaste. Wild Strawberry on the other hand came off as a strong vanilla with a hint of strawberry. The strawberry was pretty muted, and was my least favorite flavor of the two. All things considered, this is a very, very good product. While the flavors might not be mind-blowing, you are getting a high-quality company product that hides no secrets. Would strongly recommend this isolate, though only if you are lactose-intolerant. Otherwise, just buy their Classic Whey (whey protein concentrate, stronger flavoring).

  • 9 Chocolate Peanut Butter

The taste was great in 2% milk! It took a little while to mix compared to others that have mixed simply but the consistency and texture is smooth after fully being mixed. It kept me decently full for an hour but it would be something to have as a snack or additive.

  • 8 Chocolate Peanut Butter

Excellent quality (as are ALL Nutrabio products) low carb, low cal, low fat, pure 100% Isolate. The taste and mixability are good, not great (see my Dymatize Iso-100 review). The texture is thicker and gummier than some would like, and the taste is a little bland. When doctored up with almond/coconut milk, natural peanut putter, or powder, 1/3 banana, maybe a 1/2 teaspoon of honey etc ... it is very very good. I will buy this product again because of the ingredients and purity. The taste and texture are not the best, but not off-putting, chemically, or overly sweet.

Verified Buyer
  • 10 Dutch Chocolate

This is the best protein powder I've ever used. And I've used protein powders for over 10 years. It mixes perfectly and quickly in water or milk. No clumps at all. The Dutch Chocolate tastes great. I've been taking this everyday for years and never have any GI distress, never any bloat, and I don't get the runs either. Sorry to be graphic. But these are important factors to consider when looking for a protein powder that you want to take long term.

  • 10 Vanilla
  • 10 Dutch Chocolate

Nutrabio 100% whey isolate is now my go-to protein. Not only is it a fully disclosed label to the exact mg, but it is also soy free which is hard to find with protein powders. Highly recommended product right here

  • 10 Vanilla

Mixed the protein up with breakfast about 45 min after my workout. And opening the pouch you can just see the purity and smell the flavor. The flavor was a very delightful vanilla, easy to drink and mixed right up with a spoon. The best thing about this stuff is the amount of protein your actually getting - Per Scoop you're getting 82% protein. I love the clear label and the fact that there is "ABSOLUTELY NONE" other ingredients in it. Very high quality protein and worth it.

Verified Buyer
  • 3 Chocolate Peanut Butter

I have been buying the nutriabio form the beginning and it has obviously been amazing for me. I decided to try something new and got the chocolate peanut butter and the taste to me was horrible, and not only that would stain my shaker cup. I loves the Dutch chocolate and I think I am probably gonna stick to that or try strawberry. Other than that it is a great product seeing it's all natural.

  • 10 Vanilla

This is the best protein powder I've come across. I've been using protein supplements for over 4 years and this one is exceptional in terms of taste and dissolvability . I mix it with skim milk and it makes a thick tasty shake.I would highly recommend this product.

Verified Buyer
  • 10 Vanilla
  • 10 Dutch Chocolate

This is the best protein I have ever came across in all my years of bodybuilding and I will never try another protein again. It's helped me win competition after competition. Nutrabio has the cleanest and most pure protein on the market and is extremely undermarketed. I recommend this protein to anyone who asks me what I take.

Verified Buyer
  • 10 Vanilla

The best products I have used to date. The protein mixes very well and tastes great. Love the full label disclosure. One of the only brands I trust. Highly recommend.

Verified Buyer
  • 1 Dutch Chocolate

Absolutlely the worst tasting protein I have ever tried!! The worst after taste and smell!!

  • 10 Dutch Chocolate

Nutrabio offers the best tasting protein that mixes really easy with no clumping. This protein offers full label disclosure with no fillers, no proprietary blends, no excipients and especially no additives. I follow a clean diet and have found a protein supplement that meets my dietary requirements. Great job Nutrabio Team!

What's in NutraBio 100% Whey Protein Isolate

2 Lbs. Chocolate Peanut Butter
Serving Size: 1 scoop/4.75tbs. (30.86 grams)
Servings Per Container:30.47
Amount Per Serving % Daily Value
Calories 110       
Total Fat 3 g 1%*
Cholesterol 5 mg <1%*
Total Carbohydrate 2 g <1%*
Dietary Fiber 1 g 3%*
Protein 25 g 50%*
Calcium 140 mg 14%*
Phosphorus 64 mg 6%*
Magnesium 22 mg 5%*
Sodium 116 mg 5%*
Potassium 161 mg 5%*
Whey Protein Isolate (non-denatured) 28.74g
(28.74 grams WPI yielding 25 grams of complete protein), (CFM cross flow micro and ultra-filtered. Cold processed. Instantized with sunflower lecithin.)
Flavoring 2.12g
(natural flavor 750 mg, natural cocoa 750 mg, xanthan gum 350 mg, salt 110 mg, annatto powder 80 mg, sucralose 80 mg)
* Percent Daily Values are based on a 2000 calorie diet
† Daily Value not established
Allergens: Milk.

Directions For 100% Whey Protein Isolate: Add 1 scoop with 6 ounces of cold water or your favorite beverage to a shaker cup or blender and mix for 25-30 seconds. Vary the amount of liquid to meet your desired taste and consistency. Drink 1-3 servings daily as needed to satisfy your protein requirements. Using nonfat milk instead of water will give your a thicker, creamier shake.

Warnings: This product is intended as a dietary supplement only. Do not use as a sole source of nutrition.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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