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Whey Protein Isolate

The Best Grass-Fed Whey Protein Isolate Options of 2024

Grace Gavilanes

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Not all protein powders are created equal. In the case of whey protein, opting for a powder that is grass-fed can be the superior option as it’s cleaner, safer, and preferred by noted professional athletes. That’s what makes grass-fed whey protein isolate a standout in the supplement industry.
 

Not only does this source of protein successfully promote overall well-being, but it’s also been found to be the most trusted option for sport. In many ways, grass-fed is best because when cows in pastures feed on grass, they are fueled with natural food—without the presence of harmful substances or GMOs. Simply put, this product provides you with peace of mind, so you can worry less about contamination, and focus more on your wellness goals.


Whether you’re looking to build muscle or prolong muscle endurance, this guide will cover five popular grass-fed whey protein options. We also include important certification and nutritional info details for each brand, along with some pros and cons of each to help you find the one that matches your preferences. At the end of this article, you can also find our answers:


  • What to consider when choosing a grass-fed whey protein
  • How we recommend you take this supplement
  • And some general FAQs we’ve heard from customers related to grass-fed whey protein 

We’ll start the list with our own Momentous product.

The Best Grass-Fed Whey Protein Isolate Options

1. Momentous Grass-Fed Whey Protein Isolate


Key Things to Know

  • Third-Party Tested: Yes
  • Contains ProHydrolaseⓇ: Yes
  • Gluten Free: Yes
  • NSF Certified: Yes

 

Product Details

  • Net Weight:1.25 lb.
  • Number of Servings: 24
  • Serving Size: 1 scoop
  • Flavors: Unflavored, Vanilla, Chocolate
  • Protein per Serving: 24g
  • Calories per Serving: 120

Pros and Cons

Pros:

  • Third-party tested
  • NSF Certified
  • Contains ProHydrolase

Cons:

  • Pricey

Why It Stands Out

We take formulation very seriously at Momentous. When it came time to design a whey protein that not only satisfied but exceeded industry standards, we partnered up with the brightest minds in science and development—including registered dietitians and human performance specialists from professional sports teams—to create Momentous Grass-Fed Whey Protein Isolate.


High-quality protein content provides essential amino acids that support muscle repair and growth after intense physical activity. This best seller, which features grass-fed whey protein isolate and proprietary enzyme blend ProHydrolase, has many health benefits. Momentous Grass-Fed Whey Protein Isolate supports muscle growth and strength, accelerates recovery when taken post-exercise, helps to strengthen your immune system, and promotes overall well-being.
 

It also offers a safer, cleaner, and more trusted experience when compared to other whey protein powders on the market. The inclusion of ProHydrolase is important: ProHydrolase is a highly effective blend of protease enzymes designed to quickly and efficiently break down protein into its most bio-usable form. It maximizes the performance benefits of protein supplements by assisting the body in absorbing more protein rather than excreting it.


This whey protein supplement is a favorite among notable industry experts, including Brandon McDaniel, the VP of Player Performance for the LA Dodgers.

“For those of you who can have dairy and prefer it, Momentous Grass-Fed Whey Protein is for you. Whey protein has been around for a long time, but with Momentous it's the highest quality of protein that you can get. It is formulated to expedite recovery—it's like a freight train running to your muscles."


- Brandon McDaniel, VP of Player Performance for the LA Dodgers

There’s an unflavored option for those who prefer that versatility, as well as chocolate and classic vanilla for those craving a flavor boost in their smoothie, oatmeal, or coffee. All it takes is one scoop mixed into your beverage or favorite recipe.


For those looking for options that put less stress on your wallet, Momentous might not be for you. Our focus on third-party testing does mean this product has a higher price point than other supplements on the market. We have high standards for quality, safety, and efficacy—and compromising on these factors for the sake of a competitively low price will never be an option for us.


Additionally, while some forms of whey protein are easily digestible due to their low lactose content, others may not be ideal for those who are either lactose intolerant or prefer to follow a vegetarian diet. This is the case for all whey-sourced powders, not just Momentous, but still something to consider when shopping for a protein powder.


However, if price is your most important factor when considering your switch to a grass-fed whey option, you may find some of the other products mentioned below as better alternatives.

2. ProMix Whey Protein Isolate Powder


Key Things to Know

  • Third-Party Tested: Yes
  • Contains ProHydrolase: No
  • Gluten Free: Yes
  • NSF Certified: No

 

Product Details

  • Net Weight: 2.5 lbs.
  • Number of Servings: 30
  • Serving Size: 2 scoops
  • Flavors: Unflavored, Vanilla, Chocolate
  • Protein per Serving: 30g
  • Calories per Serving: 150

Pros and Cons

Pros:

  • Third-party tested
  • Gluten-free
  • 30g of protein per serving

Cons:

  • Not NSF Certified
  • Two scoops per serving
  • No ProHydrolase

Why It Stands Out

On the surface, this offering from ProMix is a solid pick. This gluten-free whey protein isolate powder is third-party tested, says no to artificial ingredients and fillers, and is available in three flavors for seamless versatility. Customers like the sweetness from the coconut sugar, and prefer it over the taste of artificial sweeteners often found in flavored supplements.
 

However, this particular supplement is not NSF Certified and does not contain ProHydrolase. Some customers also call out the brand’s switch from paper to plastic packaging, notably taking a step back when it comes to sustainability efforts. 

3. Boba Tea Protein - Milk Tea Whey Protein


Key Things to Know

  • Third-Party Tested: No
  • Contains ProHydrolase: No
  • Gluten Free: Yes
  • NSF Certified: No

 

Product Details

  • Net Weight: 2.43 lbs.
  • Number of Servings: 25
  • Serving Size: 1 scoop
  • Flavors: Classic Milk Tea, Taro Milk Tea, Matcha Latte, Jasmine Milk Tea, Thai Tea, Vietnamese Coffee, Milk Candy Milk Tea, Pumpkin Spice Milk Tea, Oolong Milk Tea
  • Protein per Serving: 25g
  • Calories per Serving: 160

Pros and Cons

Pros:

  • Wide range of flavors
  • Gluten-free
  • 25g of protein per serving

Cons:

  • Not gluten-free
  • Not third-party tested
  • No ProHydrolase

Why It Stands Out

Boba tea (also known as bubble tea) is viewed by many as a treat, and now with the release of Boba Tea Protein’s grass-fed whey product, it can be a healthy addition to your day as well. With an array of classic flavors, this offering is made for those looking to satisfy their sweet tooth with ingredients like real organic taro. Most customers are impressed with each flavor profile, noting that the offering “tastes like the real thing” while still prioritizing clean ingredients.
 

Unfortunately, this whey protein powder is not third-party tested and does not contain ProHydrolase. Additionally, some customers also recommend against using sweetened milk as this protein powder already comes sweetened.

4. 365 by Whole Foods Market - Grass-Fed Whey Protein


Key Things to Know

  • Third-Party Tested: No
  • Contains ProHydrolase: No
  • Gluten Free: No
  • NSF Certified: No

 

Product Details

  • Net Weight: 1 lb. 2 oz.
  • Number of Servings: About 20
  • Serving Size: 1 scoop
  • Flavors: Vanilla, Chocolate
  • Protein per Serving: 20g
  • Calories per Serving: 110

Pros and Cons

Pros:

  • Dissolves fast
  • “Sugar conscious”
  • Low calorie

Cons:

  • Not gluten-free
  • Not third-party tested
  • No ProHydrolase

Why It Stands Out

This keto-friendly option from the Whole Foods Market brand offers 20g of protein per serving and is also deemed “sugar conscious” due to its 2g of sugar per serving. Customers like that it dissolves quickly and say it pairs best in smoothies. It’s also a convenient get for regular Whole Foods shoppers.


As for cons, this pick does not include ProHydrolase, and is also only available in Vanilla and Chocolate flavors, making for a less versatile addition to your favorite recipes. Some customers have also reported their disappointment with the product’s aftertaste. 

5. Solgar Grass-Fed Whey to Go


Key Things to Know

  • Third-Party Tested: No
  • Contains ProHydrolase: No
  • Gluten Free: Yes
  • NSF Certified: No

 

Product Details

  • Net Weight: 2 lbs.
  • Number of Servings: 36
  • Serving Size: 1 scoop
  • Flavors: Unflavored, Vanilla, Chocolate
  • Protein per Serving: 20g
  • Calories per Serving: 100

Pros and Cons

Pros:

  • Gluten-free
  • Dissolves easily
  • Low calorie

Cons:

  • Made with whey protein concentrate
  • Not third-party tested
  • No ProHydrolase

Why It Stands Out

According to their site, Solgar’s Grass-Fed Whey to Go is committed to providing consumers safe, quality products that enhance overall health. This Solgar option is gluten-free and soy-free—both of which are important factors for those with specific dietary preferences. Customers like that the product dissolves fast and mixes easily in beverages.


Unfortunately, this supplement does not undergo third-party testing, and uses whey protein concentrate in addition to whey protein isolate. Whey protein concentrate has been found to contain less protein overall, and more fats and carbohydrates. Those searching for a product that has a single source of protein may want to reconsider. 

6.  Naked Nutrition - Clear Naked Whey


Key Things to Know

  • Third-Party Tested: Yes
  • Contains ProHydrolase: No
  • Gluten Free: Yes
  • NSF Certified: No

 

Product Details

  • Net Weight: 1.6 lbs.
  • Number of Servings: 28
  • Serving Size: 1 scoop
  • Flavors: Grape, Fruit Punch, Lemonade
  • Protein per Serving: 20g
  • Calories per Serving: 100

Pros and Cons

Pros:

  • Zero sugar
  • Third-party tested
  • No artificial ingredients

Cons:

  • Foamy when mixed
  • Six ingredients versus one
  • No ProHydrolase

Why It Stands Out

Available in three refreshing flavors, the Clear Naked Whey from Naked Nutrition is a new take on typical whey protein supplements. Its taste and consistency is that of a sports drink, which may be appealing to those craving something lighter than a protein shake. It also contains zero sugar. Much like the rest of Naked Nutrition’s product portfolio, this pick is free of artificial ingredients, and is certified gluten-free.
 

Unfortunately, this offering is not Informed Choice-certified like their other offerings. Additionally, it does not contain ProHydrolase and uses six ingredients, which is five more than its original whey protein concentrate product. Customers also call out the drink’s “lingering foam” after mixing. 

7. Transparent Labs 100% Grass-Fed Whey Protein Isolate


Key Things to Know

  • Third-Party Tested: Yes
  • Contains ProHydrolase: No
  • Gluten Free: Yes
  • NSF Certified: No

 

Product Details

  • Net Weight: 4 lbs.
  • Number of Servings: 52
  • Serving Size: 1 scoop
  • Flavors: Milk Chocolate, French Vanilla, Oatmeal Chocolate Chip Cookie, Chocolate Peanut Butter
  • Protein per Serving: 28g
  • Calories per Serving: 130

Pros and Cons

Pros:

  • Wide range of flavors
  • Third-party tested
  • Informed Choice Certified

Cons:

  • Contains Stevia
  • No ProHydrolase

Why It Stands Out

The whey protein from Transparent Labs not only blends well and tastes great according to customers, but the offering is also made using only natural ingredients. That means no artificial sweeteners, colors, or flavors. It’s also high in protein, with 28g of grass-fed whey protein in every serving.


Unfortunately, this pick is naturally sweetened with Stevia, which can be an acquired taste for many. Additionally, those with a serious gluten allergy may want to reconsider this pick since the label states this whey protein powder is manufactured in a facility with wheat.

8. Garden of Life SPORT Whey Protein Powder


Key Things to Know

  • Third-Party Tested: Yes
  • Contains ProHydrolase: No
  • Gluten Free: Yes
  • NSF Certified: Yes

 

Product Details

  • Net Weight: 1.5 lbs.
  • Number of Servings: 20
  • Serving Size: 1 scoop
  • Flavors: Vanilla, Chocolate
  • Protein per Serving: 24g
  • Calories per Serving: 120

Pros and Cons

Pros:

  • Contains probiotics
  • Informed Choice and NSF Certified
  • No added hormones, antibiotics, or sugars

Cons:

  • Contains Stevia
  • Features a protein blend
  • No ProHydrolase

Why It Stands Out

In addition to providing an increase in customers’ protein intake, this whey protein powder from Garden of Life also features clinically studied probiotics to help support immune health. Their whey, which is cold-processed and micro-filtered, is sustainably sourced from Irish family farms with small herds of cattle.


Unfortunately, this pick does not contain ProHydrolase. And while it is made with whey protein isolate, it also contains milk protein. Because of this, it may not be an ideal option for those looking to supplement their routine with a single-source protein. Some customers also call out its too-sweet flavor and filler ingredients such as organic tapioca fiber, organic gum acacia, and sunflower lecithin. 

What to Consider When Choosing Grass-Fed Whey Protein Isolate

Protein Content and Quality

Protein is a fundamental macronutrient and a critical building block of the human body that is essential to the support of growth, development, and recovery of muscles. Since protein is involved in one form or another in everything your body does, supplementing your diet with high-quality protein is essential.


Does It Include ProHydrolase?

The addition of ProHydrolase further enhances the absorption and utilization of whey protein. Clinical studies have found that ProHydrolase increases amino acids in the blood by 20%, helping build muscle mass and accelerate muscle recovery when combined with a protein supplement.


Source and Quality of Grass-Fed Whey

Grass-fed whey protein Isolate is derived from whey protein, a by-product of milk. While countless protein powders feature this key ingredient, not all are created equal. That’s why sourcing is important. Not only is ensuring that the product you’re buying is sustainably and safely sourced, but that it’s also safe for consumption.


We recommend opting for whey that comes from grass-fed cows free from hormones, steroids, and rBST (recombinant bovine somatotropin, which has been linked to prostate, colorectal, and breast cancer). Whey that undergoes cold and micro-processing filtration (also known as whey protein isolate) also helps preserve the protein’s amino acid profile, ensuring exceptional quality and absorbability.


Additives and Artificial Ingredients

When it comes to supplements as a whole, an important rule of thumb is to reach for products that say no to superfluous ingredients—like additives, artificial sweeteners, and fillers—and include only the high-quality, essential ingredients that are not only clinically proven to make a lasting impact, but are also clean and safe. Doing so ensures a healthier you, from the inside out.


Digestibility and Allergens

Taking a closer look at supplement labels is key to finding your best match. Momentous Grass-Fed Whey Protein Isolate is low in lactose, making it generally well tolerated by individuals with lactose intolerance.


Third-Party Testing and Certifications

Third-party testing offers an unbiased review and approval of supplements. Some products skip third-party testing and instead take testing in-house. When looking for the most trustworthy supplement, we recommend opting for one that is rigorously tested by independent third parties to ensure each product is safe, effective, and reliable. The same goes for certifications. If your chosen product is fully NSF- and Informed Sport-certified, you can rest assured that it’s safe and that the company adheres to strict testing and inspection standards.


We considered all these factors when formulating Momentous Grass-Fed Whey. We work closely with the most dynamic and advanced network of experts in the field of human performance to bring you scientifically validated products that are effective, safe, and easy on digestion.

Magnesium L-Threonate

Why Grass-Fed Whey Protein Isolate Is Better Than Regular Protein Powder

There is extensive research demonstrating the benefits of high-quality whey protein. Scientific studies consistently highlight the positive impact of whey protein on muscle recovery, growth, and overall health. You may be wondering, “why is grass-fed whey protein isolate more expensive than others?” The answer is simple: You pay for the quality you get. 

How We Recommend People Take Whey Protein Isolate

When to Take

As previously mentioned, the best time to take whey protein isolate is after a workout. Although this recommendation is backed by science, that doesn’t mean there’s not room for flexibility. You can take this whenever you need to boost your daily protein intake.


How to Use

Incorporating whey protein isolate into your daily wellness routine should be easy. Simply add the recommended serving to a 12 oz. beverage, smoothie, coffee, oatmeal, or your favorite baked goods. From there, all that’s left is to mix thoroughly and enjoy. You’ll be one step closer to reaping the health benefits a high-quality whey protein powder has to offer.


Onset Time

Wondering how long it takes to experience results? It’s been estimated that it takes two to four weeks of supplementation for noticeable improvements to be felt. Long-term benefits are best achieved with regular daily supplementation.


It’s also important to take varying factors—such as diet, exercise intensity, and consistency—into consideration. Everybody is unique, which means results are not one-size-fits-all. The best piece of advice we can relay to wellness enthusiasts is to be patient and consistent with your whey protein intake.


Expected Results

With regular use of this high-quality whey protein, combined with a balanced diet and exercise regimen, noticeable results related to muscle performance and muscle recovery can typically be expected within a few weeks. As is always the case with incorporating supplements into your daily wellness routine, we recommend consulting your licensed healthcare professional before introducing a new product to your regimen.

FAQs

Is grass-fed whey protein good for you?

Yes. Choosing a grass-fed protein product ensures you’re receiving a high-quality, pure, and nutritious pick that’s in line with what top athletes use.


Is it okay to drink whey isolate every day?

Yes, we encourage taking grass-fed whey protein isolate daily to experience the full range of health benefits. Consistency is key with supplementation. 


Is grass-fed whey protein better than plant protein?

If you’re not vegan or vegetarian, we recommend opting for grass-fed whey protein. This type of protein powder has a rich amino acid profile, and is designed to be more nutritionally complete compared to plant-based protein


 Is grass-fed whey protein easy to digest?

Yes, grass-fed whey protein is easy to digest since it’s low in lactose. Powders with the addition of ProHydrolase enhances maximum absorption and promotes easy digestion.
 

Should I buy normal whey or whey isolate?

Normal whey is made for those who prefer more carbohydrates, fat, and calories in their protein powder. Whey protein isolate undergoes a much more intense filtration process, leaving it with less of the aforementioned contents, plus more protein than its counterpart. The latter is a good option for those who are taking a more mindful approach to the nutrient content in their protein powder.

Grace Gavilanes

Grace Gavilanes

Grace Gavilanes is a writer-editor with over 10 years of experience in the wellness and lifestyle space. Her writing has been published in People, Well + Good, Glamour, Food & Wine, and more.