Cellucor IsoPro Grass-Fed Native Whey

Whey protein isolate is preferred by some gym-goers for its high protein content (which often reaches up to 90% protein per gram) and its distinctive insulin “spike”. In addition, whey protein isolate is also a rich source of amino acids and is known for being lower in fat than other whey protein sources.

Below we take an in-depth look into Cellucor IsoPro Grass-Fed Native Whey, to see whether this ethically-sourced whey protein isolate offers the right combination of performance-boosting benefits for customers.

Cellucor IsoPro Grass-Fed Native Whey Pros

  • Ethically sourced from grass-fed cows
  • Like most protein powders, this product is not burdened with many side effects
  • Full money-back guarantee on all official website purchases

Cellucor IsoPro Grass-Fed Native Whey Cons

  • Despite hyperbolic advertising, it is no more effective than other protein powders
  • Many customers complain about the poor taste and mixability
  • Price is quite high considering the low number of servings and simple formula
Watchdog Rejected

Cellucor IsoPro Grass-Fed Native Whey


What You Need To Know About Cellucor IsoPro Grass-Fed Native Whey

Cellucor IsoPro Grass-Fed Native Whey is a protein powder supplement featuring a single dose of whey protein isolate. Sourced ethically from grass-fed cows, this protein powder is advertised as being a cut above regular protein powders, offering greater performance-boosting effects than the average product. This product is also notable for its unusual flavours, including its bizarre “fruity cereal” flavour.

This product is produced and sold by Cellucor. Despite its relative popularity, Cellucor has faced controversy in the past – they were actually the subject of a federal class-action lawsuit and some hugely negative media attention after it was discovered that their C4 series contained dangerous substances like DMAA. The company has since removed the offending ingredient from its products, but faces a struggle to re-establish trust with its customer base and with regulators.

What Are The Side Effects Of Cellucor IsoPro Grass-Fed Native Whey?

Protein powders are unlikely to cause much in the way of side effects unless they are consumed to serious excess. Overconsumption of whey protein can cause bloating, weight gain, increased bathroom visits, thirst, nausea, cramps, reduced appetite, fatigue, and headaches. When following the manufacturer’s recommended dosage, protein powders shouldn’t cause any issues at all.

How Much Does Cellucor IsoPro Grass-Fed Native Whey Cost?

On most of the websites we checked (including the official Cellucor webstore), a single pack of Cellucor IsoPro Grass-Fed Native Whey costs around $35-$40. However, we were able to find the same packs on sale for slightly cheaper on All Star Health (where it costs $30) and www.bodybuilding.com (where customers can buy a $35 pack on a buy-one-get-one-half-price deal). Some Amazon dealers also offer reasonably low prices. Customers should remain aware that each 1.72lb tub of Cellucor IsoPro Grass-Fed Native Whey contains just 24 servings of powder.

Our Verdict On Cellucor IsoPro Grass-Fed Native Whey

There isn’t much to split different protein powders, as most are roughly the same. However, Cellucor IsoPro Grass-Fed Native Whey is interesting in that it is a clear example of what not to choose.

Despite the manufacturer’s claims that this formula is superior, it actually represents quite a limited blend. Containing just a single dosage of whey protein isolate, this product is arguably inferior to other brands that mix the fast-acting effects of whey protein isolate with slower-acting sources like micellar casein. The protein used in this product may be ethically-sourced, but that unfortunately does not make it any more effective than any other.

To make it worse, this product is notably expensive given the low number of servings that are provided per pack. Customers appear to have given a mixed reaction when it comes to the product’s flavour and mixability, with the “fruity cereal” flavour often singled out for being unpalatable.

Overall, this product may appeal to those looking for a good source of whey protein isolate, although we’re sure you could find a cheaper and tastier option.

We do not recommend Cellucor IsoPro Grass-Fed Native Whey to our readers.

Cellucor IsoPro Grass-Fed Native Whey Review

Cellucor IsoPro Grass-Fed Native Whey is a protein powder supplement that comes in a set of distinctive flavours, including fruity cereal, orange citrus, and strawberry splash. The manufacturers claim to use a special cold filtration process that removes all of the fat and cholesterol you would normally find in a whey protein supplement.

Cellucor IsoPro Grass-Fed Native Whey Facts

  • Manufactured by Cellucor
  • Contains 1.72lb of powder per pack
  • Protein powder containing whey protein sourced from grass-fed cows

Cellucor is a brand owned by Woodbolt Distribution LLC, who are based in Texas, USA. The company recruit through the name NutraBolt, and own several supplement brands, including Neon Sport (a sports nutrition range for athletes), Royal Sport Ltd (top-shelf stimulant based nutrition brand), Cavalier (a range of supplements for men, including testosterone boosters and sexual health supplements), and Cellucor. The company can be contacted using the information provided on the Cellucor official website’s contact us page.

How to Take Cellucor IsoPro Grass-Fed Native Whey

The directions for use are as follows:

  • Add 1 rounded scoop of IsoPro Grass-Fed Native Whey with 16-20 fl. oz. of cold water and mix immediately. Consume directly following exercise on training days and first thing in the morning on non-training days. For best results, consume daily.

Cellucor IsoPro Grass-Fed Native Whey Concerns:

  • Extremely expensive for what it is
  • Does not appear to be particularly well-liked by customers
  • The focus on low-fat means that this protein powder may be less effective than others

What Does Cellucor IsoPro Grass-Fed Native Whey Claim To Do?

Cellucor IsoPro Grass-Fed Native Whey is a protein powder that claims to help build and nourish tired muscles. What distinguishes the mixture from other comparable products is its reported use of a cold filtration process that supposedly filters out “unnecessary fats” and makes the protein more effective.

Cellucor claims that their protein powder has been proven to more effectively boost muscle power and performance and shorten recovery time when compared to other products.

Does Cellucor IsoPro Grass-Fed Native Whey Work?

This product utilises whey protein isolate, which means that it has considerably less fat than other comparable protein powders. Like most other protein supplements out there, it should work well to boost muscular performance and endurance and lower recovery times. However, there is no reason to think that this product’s results are more dramatic than any other protein powder out there. In fact, its reliance on just a single form of protein likely robs it of some the slow-acting benefits of other forms (like micellar casein for example).

What Are The Ingredients of Cellucor IsoPro Grass-Fed Native Whey?

The ingredients found in Cellucor IsoPro Grass-Fed Native Whey are listed below. The quantities listed are correct for 1 rounded scoop (31g) of powder. Each rounded scoop also contains 110 calories and 0.5g of fat.

  • PRONATIV® Native Whey Protein Isolate 25g: Whey Protein Isolate is extracted from milk products. It is a form of protein which is highly bioavailable, meaning that it is easily and quickly absorbed into the bloodstream. This protein contains a high number of branched chain amino acids, which are used to fuel working muscles and stimulate muscle growth. Source
  • Other Ingredients: Natural & Artificial Flavors, Silicon Dioxide, Citric Acid, Guar Gum, Sodium Chloride, Malic Acid, Sunflower Lecithin, Sucralose, Acesulfame Potassium, Silicone (anti-foaming agent).

Does Cellucor IsoPro Grass-Fed Native Whey Have Any Side Effects?

Protein shakes do not generally come with too many side effects. Overuse of whey protein shakes can sometimes cause increased bowel movements, thirst, bloating, nausea, cramps, reduced appetite, fatigue, and headaches. Those suffering from kidney issues or those that require prescription medication should check with their doctor before trying out protein shakes, as the increased protein intake could cause issues.


This product is only intended to be consumed by healthy adults 18 years of age or older. Do not use this product if you are pregnant or nursing. Discontinue use and immediately contact your health care professional if you experience any adverse reaction to this product. Follow label instructions and do not exceed recommendations for Suggested Use. Do not use if safety seal is broken or missing.

Are There Any Customer Reviews For Cellucor IsoPro Grass-Fed Native Whey?

The reviews we were able to find for Cellucor IsoPro Grass-Fed Native Whey were slightly mixed. Most customers agreed that the product broadly worked as advertised, but the flavours appeared to be highly controversial (especially the fruity cereal flavour).

First off, it won’t dissolve so I end up with a clumpy mess and texture in my mouth – I hate it. The taste – way way too sweet. In addition, there is an artificial sweetener aftertaste… I wish I could have returned it.

Unique flavor but has a bit of an aftertaste for me.

The powder is finely textured and stirs/mixes well in water and in my bullet mixer with almond milk and yogurt. It does indeed taste like a fruit loop-type cereal, which is sort of a berry flavor with a hint of vanilla. It is ever so slightly on the sweeter side and could be a little less for my taste but I think most people will like it. I’ve made the switch to grass fed meats for several reasons and it’s good to see that milk and protein supplements are moving in this direction, as well.

Throwing this in your smoothies literally makes it taste like fruit loops. I have to admit it was a little weird. Tasty, but not my favorite.

Does Cellucor IsoPro Grass-Fed Native Whey Offer a Money-Back Guarantee?

All Cellucor products are covered by a full 100% money-back guarantee when purchased directly from the official Cellucor website. Customers are able to return any Cellucor product they are dissatisfied with, as long as the company receives the package within 30 days after delivery.

Where Can I Buy Cellucor IsoPro Grass-Fed Native Whey?

Cellucor IsoPro Grass-Fed Native Whey is available to buy from several online retailers, including Amazon, All Star Health, Muscle and Strength, www.bodybuilding.com, A1 Supplements, Campus Protein, and the official Cellucor website. A single pack of 24 servings tends to sell for around $35-$40.

Summary: Cellucor IsoPro Grass-Fed Native Whey

Cellucor IsoPro Grass-Fed Native Whey

2.6 out of 5
Cellucor IsoPro Grass-Fed Native Whey Rating

The Muscle Watchdog does not recommend Cellucor IsoPro Grass-Fed Native Whey.

  • Effectiveness
  • Safety
  • Price / Guarantee

Top Performing Supplements 2021

Hunter Test
MAN Sports Beta-Alanine
Product Phentaslim Hunter Test MAN Sports Beta-Alanine
Review Watchdog Review Watchdog Review Watchdog Review
Purpose Cutting body fat, endurance, thermogenesis. Testosterone booster. Pre-workout, endurance.
Clinically Proven Ingredients
Clinically Proven Ingredients
Customer Support
Customer Support
Money-back Guarantee
Money-back Guarantee
Free Shipping
Free Shipping

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Have Your Say

Add your comment

We'd love to get your opinion. Please keep it clean and stay on topic, no spamming. Comments are moderated before being made live. Your email address will not be published.
We cannot give advice about medical conditions or prescription drugs. Please direct specific medical questions to your doctor.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Get the conversation started by leaving your comments using the form above.