We test and review fitness products based on an independent, multi-point methodology. If you use our links to purchase something, we may earn a commission. Read our disclosures.

If supplements were ancient Greek gods, then whey protein would be Zeus—more powerful than the rest. Whey protein itself is simply a protein that’s extracted from cow’s milk that contains all the essential amino acids needed for muscle growth and can be found in cheese, soup stocks, and other products. 

Most people know about whey due to their quest to find the best whey protein powder out there, and we’re here to tell you that this is where your search ends. 

Our team of certified personal trainers, competitive weightlifters, and certified nutrition coaches tried more than 75 of the best protein powders (including the best clear whey protein drinks) and consulted with Laila Ouldibbat, a New York City-based registered dietitian who’s pursuing a Ph.D. in Biological Sciences, to find the best whey protein out there. 

The top picks are the ones that scored the highest in our multi-point rating system that looks at:

  • Ingredients and formulation: Does it use high-quality ingredients in research-backed doses? Is there at least 20 grams of protein per serving?
  • Type of whey: Does the protein powder use whey protein isolate or whey protein concentrate? Whey protein isolate has less lactose.
  • Price: How expensive is each serving?
  • Taste: Did we like the flavor?

Medical disclaimer: This article is intended for educational and informational purposes only. It is not intended as a substitute for medical advice. For health advice, contact a licensed healthcare provider.

Our Top 12 Picks for the Best Whey Protein Powder

Best Whey Protein Video Review

Compare Side by Side

Transparent Labs Whey Isolate Nutricost Whey Concentrate Legion Whey+ Jacked Factory Authentic ISO Gainful Customized Protein Sports Research Whey Momentous Whey Optimum Whey Protein Kaged Whey Isolate Dymatize ISO 100 Isopure Whey Isolate Orgain Grass Fed Whey Protein
Rating
Our expert product testers, who include certified personal trainers and coaches, use a multi-point testing methodology to determine average ratings out of 5 stars.
Price Per Serving $1.99 $0.73 – $0.99 $2.00 $3.50 $1.05 $2.70 $1.69 $1.46 $1.79 $1.70 – $2.12 $1.14
Protein Per Serving 28 g 25 g 22 g 25 g 19 – 26 g 25 g 20 g 24 g 25 g 25 g 25 g 21 g
Type Whey protein isolate Whey concentrate Whey protein Whey isolate Whey, plant-based, low-lactose whey Whey isolate Whey isolate Whey protein Whey isolate Hydrolyzed whey isolate Whey isolate Whey concentrate
Third-party Tested?
Calories Per Serving 130 130 – 150 100 110 110 140 90 120 – 130 120 120 100 130 – 140
Flavors 8 flavors 5 flavors 17 flavors 6 flavors 8 flavor packs available 2 flavors 3 flavors 20+ flavors 5 flavors 13 Flavors Unflavored 2 flavors

Best Whey Protein Powder Overall: Transparent Labs 100% Grass-Fed Whey Protein Isolate

Good for: People who want to use protein powder as part of a muscle-building plan

Best Whey Overall
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.2
Transparent Labs 100% Grass-Fed Whey Protein Isolate
Gluten-free
Multiple flavors
Third-party tested
No artificial sweeteners or fillers
30-day guarantee
Subscribe and save
Product Type
100% grass-fed whey protein isolate
Price Per Serving
$1.99, or less if you subscribe
Protein Content
28g of protein per serving
Third-Party Testing
Informed Choice
Natural Shoppers
This formula contains no artificial sweeteners, fillers, or dyes
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Flavor Lovers
With 14 flavors currently offered and the lineup changing frequently, you’ll never get bored of the same old taste
Pros
High-quality protein
Lots of flavors to choose from
No artificial sweeteners, food dyes, or preservatives
Third-party tested
Subscribe and save 10% and free shipping
Cons
Price per serving on the high end
Some reviews complain that it’s too sweet
Price per serving
$1.99
Flavors
14 total flavors, including Milk Chocolate, French Vanilla, Strawberry Milkshake, Oatmeal Chocolate Chip Cookie, Mocha, and more
Total Servings
30
Protein Content
28g of whey isolate per serving

Scorecard for Transparent Labs 100% Grass-Fed Whey Protein Isolate

Overall Rating: above-average
Rating FactorsOur Scores
Label Accuracy Excellent
Bisphenols Excellent
Heavy Metals Above Average
Phthalates Excellent
Pesticides Excellent
Excellent = Top 10% Above Average = Top 25% Meets Standard = Top 50%

GGR collaborated with Ellipse Analytics, an accredited third-party lab, to test more than 150 protein powder products. We screened for dozens of factors and rated each product against its peers.

Our testers love Transparent Labs 100% Grass-Fed Whey Protein Isolate because we know exactly what’s in it, and almost every flavor we’ve tried is a 5 out of 5 on taste. Yes, it’s a little more expensive than other protein powders but you get what you pay for.

What our tester says:

“The Peppermint Hot Chocolate Flavor gets a 5 out of 5 from me for its taste. This tastes like something you’d leave out for Santa, really.”

We love Transparent Labs 100% Grass-Fed Whey Protein Isolate as our best overall pick. It has the largest protein content of any whey protein powder in our roundup with 28 grams, but that’s not the only reason this is our favorite protein powder overall. It also tastes great and mixes well.

The limited edition Peppermint Hot Chocolate Flavor gets a 5 out of 5 from me for its taste. This tastes like something you’d leave out for Santa, really. I love heating up my milk before mixing this with it for a nice winter treat. The solubility also earns top marks, earning another 5 out of 5.

transparent labs whey isolate protein powder being scooped

Another big factor is Transparent Labs’ commitment to using simple, proven ingredients. Case in point, the first ingredient in this protein powder is grass-fed whey protein isolate. Whey protein isolate is one of the most bioavailable forms of protein1 meaning your body can use more of it.

RELATED: What Is Whey Protein?

Third-party lab test results for Transparent Labs Whey Isolate Protein Powder
Our site worked with an independent accredited lab, Ellipse Analytics, to test and rate more than 150 protein powders for purity (heavy metals, bisphenols, phthalates, and pesticides) and label accuracy (protein content). We then scored them and chose to feature products that ranked either (insert name for Top 10%), (Top 25%), or Top 50%.

Whey protein isolate has also had most of its lactose removed by a special filtration process, so people with lactose sensitivities can consume it with little to no discomfort2 (most of the fat is also removed from the whey during this filtration, resulting in a “leaner” protein powder). Whey protein is also found in high-quality products like protein bars and meal replacement products.

Transparent Labs is popular with consumers and dietary professionals like registered dietitian Laila Ouldibbat. They live up to their name by having a transparent nutrition label and ingredients list, and provide certificates of analysis and composition on their website. Laila also likes that the ingredient list is very short—only five ingredients. 

RELATED: Best Protein Powder for Women

It scores a 3.5 out of 5 for its mid-range price per serving of $1.99, but for many people, the price is worth it. We deep dive into this supplement in our Transparent Labs protein review, so be sure to take a look for more.

Price$2 per serving/$59.99 per container
Flavors13 options
Protein per serving28 g
Whey protein typeGrass-fed whey protein isolate
Calories per serving130-150 (depending on flavor)
Added sugars0-1 g (depending on flavor)
Sweetener(s)Stevia extract
Servings per container30

Best Whey Protein Powder on Amazon: Nutricost Whey Protein Concentrate

Good for: People who want great-tasting and effective protein at an affordable price 

Best Whey on Amazon
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.6
Nutricost Whey Protein Concentrate
Gluten-free
Non-GMO
Third-party tested
Made in a GMP-compliant facility
30-day guarantee
Subscribe and save
Product Type
Undenatured whey protein concentrate
Price Per Serving
As low as $0.73 per serving, or less if you subscribe
Flavors
Chocolate, Chocolate Peanut Butter, Strawberry Milkshake, Vanilla, Unflavored
Third-Party Testing
Yes
Budget Shoppers
Starting as low as $0.73 per serving, Nutricost Whey Concentrate is one of the most affordable protein powders on the market
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Flavor Lovers
With 5 delicious flavors, you’ll never get bored of the same old taste
Pros
Budget-friendly
Non-GMO and gluten-free
Third-party tested
Subscribe-and-save options
Cons
May not mix as well as whey isolate
Higher calorie content than other whey proteins
Price per serving
$0.73
Flavors
Chocolate, Chocolate Peanut Butter, Strawberry Milkshake, Vanilla, Unflavored
Total Servings
60
Protein Content
25g of whey concentrate per serving

Nutricost Whey Concentrate contains 25 grams of high-quality whey protein concentrate, available in five flavors. It’s gluten-free, non-GMO, manufactured in a GMP-compliant facility, and third-party tested.

What our tester says:

“So, I don’t love peanut butter, so I wasn’t too jazzed about trying the Chocolate Peanut Butter flavor. However, the peanuty flavor is just right; it’s not too powerful and doesn’t overpower the chocolate. I really, really liked it.”

We chose Nutricost Whey Protein Concentrate as the best whey protein on Amazon because it’s super affordable and tastes delicious. It starts at just $0.73 per scoop for the 5-pound unflavored container, and only $0.99 or less if you purchase a 5-pound flavored container. This earns Nutricost a 5 out of 5 in the pricing category, as the most affordable protein powders are around $1 per serving. Plus, Prime members can enjoy free shipping.

Each serving of Nutricost Whey Concentrate contains 25 grams of protein, which, according to registered dietitian Perry Nix, is plenty to stimulate protein synthesis for building and repairing muscle mass. This makes it easier for your body to adapt to increases in intensity and volume of lifts or other exercises and allows you to make gains quicker and more effectively, which we’re all about. 

woman drinking nutricost whey protein

One thing to keep in mind with this protein powder is that whey protein concentrate tends to contain more fat and lactose than whey protein isolate. Perry noted that because of this, it may not be the best fit for people who are lactose intolerant, or for those with weight loss as a goal. We still give Nutricost Whey Concentrate a 5 out of 5 for formulation, though. 

GGR’s Senior Director of Content Kate Meier used this protein powder almost daily for two weeks. She used it with water, milk, and also in a smoothie. Kate said it tasted great when mixed with a milk product and was super creamy whether it was mixed up in a blender bottle or an actual blender. She gave it a 5 out of 5 for solubility because there were no big clumps and it “mixes extremely well.”

Nutricost keeps it pretty straightforward with the flavors, offering Chocolate, Vanilla, Chocolate Peanut Butter, Strawberry Milkshake, and Unflavored. We love fun flavors, but honestly, straightforward flavors like this allow for a lot of versatility when it comes to things like making smoothies and baking. Kate tried the Chocolate Peanut Butter flavor and rated it a 5 out of 5 for taste even though she isn’t a huge peanut butter fan. “The peanut-y flavor is just right. It’s not too powerful and doesn’t overpower the chocolate flavor. I really, really liked it.” 

Another notable aspect about this protein powder is that it’s third-party tested—for a budget option, you can’t beat it.

Check out our Nutricost Whey Protein Concentrate review for a more in-depth look at this protein option.

Price$0.73 or $0.99 per serving/$43.95 or $59.95 per container 
FlavorsChocolate, Vanilla, Chocolate Peanut Butter, Strawberry Milkshake, Unflavored
Protein per serving25 g
Whey protein typeWhey protein concentrate
Calories per serving130-150 (depending on flavor)
Added sugars0 g
Sweetener(s)Sucralose
Servings per container60

Best Clean Whey Protein Powder: Legion Whey+

Good for: Those who want a clean whey protein without any artificial ingredients

Best Clean Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4
Legion Whey+
Non-GMO
Multiple flavors
Third-party tested
Sourced from small dairy farms in Ireland
It’s-on-us satisfaction guarantee
Subscribe and save
Use code GARAGEGYM to save 20% See Details
Product Type
100% grass-fed whey protein isolate sourced from small dairy farms in Ireland
Price Per Serving
$2, or less if you subscribe
Protein Content
21-23g of protein per serving, depending on the flavor
Third-Party Testing
Labdoor
Natural Shoppers
This formula is naturally sweetened and contains no artificial sweeteners, flavors, fillers, or dyes
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Flavor Lovers
With 22 flavors currently offered and the lineup changing frequently, you’ll never get bored of the same old taste
Just Protein Please
With a low carb and fat content, you’ll be sure to be adding plenty of protein into your daily intake without adding too many other macros
Pros
High-quality protein with low fat and carb content
Lots of flavors to choose from
Natural ingredients
Third-party tested
Subscribe and save 10%
Money-back guarantee for first-time buyers
Cons
Higher cost per serving
Can be clumpy when mixed
Some customers thought flavor was too sweet, or in some cases lacked flavor
Price per serving
$2
Flavors
22 total flavors, including Dutch Chocolate, French Vanilla, Cinnamon Cereal, Chocolate Peanut Butter, S’mores, Birthday Cake, and more
Total Servings
30
Protein Content
21-23g of whey isolate per serving, depending on the flavor

Scorecard for Legion Whey+

Overall Rating: average
Rating FactorsOur Scores
Label Accuracy Excellent
Bisphenols Excellent
Heavy Metals Meets Standard
Phthalates Excellent
Pesticides Excellent
Excellent = Top 10% Above Average = Top 25% Meets Standard = Top 50%

GGR collaborated with Ellipse Analytics, an accredited third-party lab, to test more than 150 protein powder products. We screened for dozens of factors and rated each product against its peers.

Legion Whey+ is a clean, sustainable protein powder that also is macro-friendly and a great option for anyone looking for a clean protein supplement. Many of our testers have bought this with their own money because they love the taste and easy mixability.

What our tester says:

“The cereal cinnamon flavor tastes like a bowl of Cinnamon Toast Crunch, but specifically when you get to the bottom of the bowl. There weren’t any issues with the solubility either.”

Unlike other whey proteins that often contain artificial flavors, sweeteners, preservatives, or fillers, Legion Athletics Whey+ Whey Isolate Protein Powder uses all-natural, high-quality ingredients in many ways. For one, Whey+ has a Truly Grass Fed certification. This mark proves the cows that produce the dairy from which the whey protein isolate is extracted only eat grass (some companies add corn or soy to the cattle’s diet) and spend a high percentage of the year outside on Irish pastures.

Bag of Legion Whey+ protein powder and shaker bottle

Now, I’m a fan of anyone who uses Irish cows, but the 5 out of 5 taste is another reason I’m such a fan of Legion Whey+.

Legion whey+ protein lab result scorecard
Our site worked with an independent accredited lab, Ellipse Analytics, to test and rate more than 150 protein powders for purity (heavy metals, bisphenols, phthalates, and pesticides) and label accuracy (protein content). We then scored them and chose to feature products that ranked either (insert name for Top 10%), (Top 25%), or Top 50%.

The cereal cinnamon flavor tastes like a bowl of Cinnamon Toast Crunch, but specifically when you get to the bottom of the bowl. There weren’t any issues with the solubility either.

Even non-Irish people will love this protein powder. Each scoop comes with 22 to 24 grams of protein (depending on the flavor) and low amounts of carbs and fat. 

It also bears a Labdoor Tested for Purity certification, which shows that researchers have checked it for harmful substances such as heavy metals, banned substances, and THC (yes, it can be present in very small amounts in some protein supplements). 

Legion’s protein powder gets a 3.5 out of 5 for pricing. It’s a bit expensive, at $1.99 per serving, but you can save 10 percent by placing it on a subscription order to receive a new one every month (you can pick different flavors and quantities).

Check out our full Legion whey protein review, or the video below, for all of our thoughts on this supplement.

Price$2 per serving/$59.99 per container
Flavors18 options
Protein per serving22-24 g (depending on flavor)
Whey protein typeNon-GMO whey protein isolate
Calories per serving100-130 (depending on flavor)
Added sugars0 g
Sweetener(s)Stevia extract
Servings per container30

Best Whey Protein Isolate: Jacked Factory ISO

Good for: People looking for an easily digestible whey isolate

Best Whey Isolate
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
3.99
Jacked Factory Authentic ISO Grass-Fed Whey Protein
Non-GMO
Multiple flavors
Low-calorie
Grass-fed whey protein isolate
30-day money-back guarantee
Subscribe and save
Product Type
Grass-fed whey protein isolate
Price Per Serving
$1.33, or less if you subscribe
Protein Content
25g of protein per serving
Flavors
Vanilla, Chocolate, Chocolate Peanut Butter, Cookies & Cream, Vanilla Oatmeal Cookie
Flavor Lovers
With 5 flavors currently offered, you won’t easily get bored of the same old taste
Just Protein Please
With a low carb and fat content, you’ll be sure to be adding plenty of protein to meet your daily intake without adding too many other macros
Easy Digestion
Whey protein isolate can be easier on the stomach and is less likely to cause digestive issues
Pros
High protein content
Low fat and calorie content
Subscribe-and-save options
Money-back guarantee for first-time buyers
Cons
Ultra-sweet taste
Sweetened with sucralose
Doesn’t mix as well as other protein powders
Price per serving
$1.33
Flavors
Vanilla, Chocolate, Chocolate Peanut Butter, Cookies & Cream, Vanilla Oatmeal Cookie
Total Servings
30
Protein Content
25g of whey isolate per serving

Jacked Factory Authentic ISO Grass-Fed Whey Protein comes very close to being pure protein, making it a great choice for those who are trying to meet their macronutrient goals. Plus, the price per serving is where this ISO shines. Keep in mind our testers found this whey isolate to be a little too sweet but it was not a dealbreaker.

What our tester says:

“The vanilla was pretty true to taste but had a slight overly sweet flavor profile to it as well. This mixes pretty good, too, although there’s minimal powder floating around after shaking it up.”

As we mentioned earlier in this list, increased protein intake can cause some rumblings down under, and we’re not talking about Australia. This is especially true if you have dairy sensitivities or are lactose intolerant (and yes, that’s two separate things).

RELATED: Jacked Factory Authentic Whey Review

Jacked Factory ISO is also great for digestion because it’s a whey protein isolate, meaning the whey protein has been filtered to be a more pure protein powder, containing at least 90% protein. This also means that most of the lactose has been removed. People with dairy sensitivities, such as lactose intolerance, should still consult their physician and use caution before taking this protein powder, but it’s less likely to cause any digestive issues4.

An image of a woman using Jacked Factory Authentic Iso protein powder

Our product tester, who has tried many a protein powder in his day, enjoyed the vanilla flavor of Authentic ISO, saying the texture was nice as well. We gave Authentic Iso a 5 out of 5 for formulation in our scoring, with 25 grams of protein and minimal carbs and fats. This means it’s also a great pick for anyone who needs a protein supplement to keep them full while cutting.

Read more about this whey protein isolate in our Jacked Factory Authentic ISO whey protein review.

Price$1.33 per serving/$39.99 per container
FlavorsChocolate, Chocolate Peanut Butter, Cookies and Cream, Peanut Butter, Vanilla, Vanilla Oatmeal Cookie, Blueberry Muffin, Cinnamon French Toast, Unflavored
Protein per serving25-27 g (depending on flavor)
Whey protein typeGrass-fed whey protein isolate
Calories per serving110-130 (depending on flavor)
Added sugars0-1 g (depending on flavor)
Sweetener(s)Stevia (some flavors contain high fructose corn syrup and sucralose instead)
Servings per container30

Best Natural Whey Protein Powder: Gainful Whey Protein

Good for: People wanting a personalized protein made with high-quality ingredients

Best Natural Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4
Gainful Customized Protein
Personalized
Multiple flavors
Natural ingredients
30-day money-back guarantee
Subscribe and save
Product Type
Customizable, whey protein concentrate and isolate blend
Price Per Serving
Starts at $3.21 per serving
Protein Content
19-26g of protein per serving, depending on customization
Flavors
Unflavored with flavor packs of Caffé Mocha, Chocolate Peanut Butter, Cinnamon Toast, Cookies & Cream, Madagascar Vanilla, Rich Chocolate, Sea Salt Caramel, and Strawberry Cream
Natural Shoppers
This formula has natural ingredients and lacks any artificial sweeteners, fillers, dyes, or flavors
Personalized Product
You’ll be able to craft this supplement to fit your specific fitness goals and needs (building muscle, weight loss, or leaning out)
Access to Dietitians
A subscription grants you access to a registered dietitian to help you reach your goals
Pros
High-quality ingredients
Can work with registered dietitians
Subscribe-and-save options
Personalized to your needs and goals
No gluten, soy, artificial sweeteners, or dyes
Cons
Expensive
Only 14 servings per container
Price per serving
Starts at $3.21
Flavors
Unflavored with flavor packs of Caffé Mocha, Chocolate Peanut Butter, Cinnamon Toast, Cookies & Cream, Madagascar Vanilla, Rich Chocolate, Sea Salt Caramel, and Strawberry Cream
Total Servings
14
Protein Content
19-26g per serving, depending on your personalization

Gainful protein powder is a subscription-based supplement that is personalized by dietitians to meet your specific needs and health goals. Your subscription will even gain you access to dietitians We enjoyed the personalized formula, taste, and solubility of Gainful but it is a pricey product that will not be suitable for everyone.

What our tester says:

“I love that consumers can get expert guidance personalized to meet their unique goals and needs. Plus, I’ve liked all the flavor boost packs, including Sea Salt Caramel—which is something I don’t typically choose or like.”

If you’re wanting a clean whey that lacks fillers and artificial ingredients, Gainful has you covered. With no artificial flavoring, no sweeteners, no fillers and no dyes, Gainful provides a protein blend with simple, high-quality ingredients and nothing else. 

Gainful takes a lot of the guesswork out of finding the right protein for you by personalizing your protein powder to suit your specific needs. After filling out a short questionnaire on dietary preferences, nutrition goals, and your fitness level, Gainful provides a customized protein blend with the calories and macronutrients at portions tailored to you and your goals.

GGR Head of Content Nicole Davis, CPT, PN1-NC, received a whey-casein blend when she tested Gainful, with 24 grams of protein per serving (the protein can range from 19 to 27 grams). Because of the clean, personalized ingredients backed by research and registered dietitians, Nicole rates the formulation a 5 out of 5.

Speaking of registered dietitians, using Gainful’s subscription-based service will get you access to a registered dietitian. “I love that consumers can get expert guidance personalized to meet their unique goals and needs,” Nicole adds.

Gainful 2

Gainful’s protein blend is unflavored by default, but you can purchase low-calorie flavor packs to add to your shake. Having tried out their variety pack, Nicole rates the taste a 5 out of 5; she says, “I like that you can control how much flavor you want in each shake or even mix flavors together.” She adds, “I’ve liked all the flavors, including Sea Salt Caramel—which is something I don’t typically choose or like.” 

Nicole does note that the protein clumps some, too, when she mixes it with milk in a shaker cup. She rates the solubility a 3.5 out of 5. “Because I like the taste, I dealt with it,” she says, “but the texture wasn’t great by any means.”

The main drawback is that this level of customization and personalization comes with a hefty price tag. Nicole’s protein costs about $2.86 per serving; it’ll be around $3 depending on your customization. Still, for a pure, natural protein suited for your own goals, this may well be worth the extra cost for you.

PriceStarts at $3.21 per serving/$45 per container
FlavorsUnflavored with flavor packs of Caffé Mocha, Chocolate Peanut Butter, Cinnamon Toast, Cookies & Cream, Madagascar Vanilla, Rich Chocolate, Sea Salt Caramel, and Strawberry Cream
Protein per serving19-26 g (depends on personalization)
Whey protein typeWhey isolate and concentrate blend (depends on personalization)
Calories per serving110
Added sugars0 g
Sweetener(s)Stevia extract, monk fruit extract
Servings per container14

Best Whey Protein Powder for Weight Loss: Sports Research Whey Isolate 

Good for: Athletes looking to recover from intense exercise

Best Whey for Weight Loss
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.68
Sports Research Whey Isolate
Gluten-free
Non-GMO
Third-party tested
Non-GMO, gluten- and soy-free
90-day return policy
Subscribe and save
Product Type
U.S. sourced whey protein isolate
Price Per Serving
$1.36 per serving
Protein Content
25g of protein per serving
Flavors
Dutch Chocolate, Creamy Vanilla
Those Who Want More
With 6.96 g of total BCAA and 1,000 mg of added leucine, you’re getting added benefits besides additional protein
Fans of Flavor
While Sports Research only offers two flavors for their Whey Isolate, both flavors scored exceptionally well in our testing; if you want your protein to taste good, this is a great option
Athletes
With an Informed Sport certification, those who may undergo drug testing for competitions can be assured that this product is safe to consume
Pros
Third-party tested
Tastes great with a creamy texture
Subscribe-and-save options
Non-GMO, gluten- and soy-free
Cons
Only two flavors available
Some issues with solubility in our testing
Price per serving
$1.36
Flavors
Dutch Chocolate, Creamy Vanilla
Total Servings
25
Protein Content
25g per serving

Sports Research whey protein isolate has 25 grams of protein per serving and just 150 calories. It’s third-party tested, too. Although there are only two flavors available, our testers think it’s worth a try.

What our tester says:

“This tastes like an instant cocoa powder drink, which is a good thing. I want to have this with marshmallows over an open fire. No protein aftertaste at all, and no upset stomach or bloating either.”

There are a few things that make Sports Research Whey Isolate ideal for weight loss, firstly that it has an ideal ratio of proteins to carbs and fats. One serving offers 25 grams of protein isolate, 2 to 4 grams of carbs, and 3.5 or 4 grams of fats depending on flavor. Because of this, it earns 4.5 out of 5 stars in the formulation category. At under 150 calories per serving and no added sugars, Sports Research Whey Isolate keeps the calories low to help those on a weight loss program maintain their caloric intake.

The formulation also contains a healthy dose of BCAAs, namely the formulation of 6.96 grams of branched-chain amino acids (BCAAs) and an additional 1,000 milligrams of leucine. It’s worth noting that BCAAs have been linked to improved muscle recovery4 and muscle endurance whereas there are several opposing studies on leucine effectiveness for muscle recovery.  

RELATED: Best Muscle Recovery Tools

Looking down into a bag of Sports Research Whey Protein Isolate.

And speaking of flavor, you’ll only have two options (Creamy Vanilla or Dutch Chocolate). I personally tested the Dutch Chocolate and wanted to curl up by a fire with roasted marshmallows on top of this protein drink. Sports Research earns a 5 out of 5 stars when it comes to flavor. 

Another reason you may be interested in supplementing with Sports Research protein is because it’s third-party tested by Informed Sport. This third-party lab guarantees that products are free from banned substances that are commonly screened for on athlete’s drug tests. It’s also non-GMO tested and gluten-free.

For more information, you can read our Sports Research Whey Protein review.

Price$1.36 per serving/$34.15 per container
FlavorsDutch Chocolate, Creamy Vanilla
Protein per serving25 g
Whey protein typeWhey protein isolate
Calories per serving140-150 (depending on flavor)
Added sugars0 g
Sweetener(s)Stevia (Dutch Chocolate contains sucralose and acesulfame)
Servings per container25 or 26 (depending on flavor)

Best Grass-Fed Whey Protein Powder: Momentous Grass-Fed Whey

Good for: People looking to add muscle mass to their physique 

Best Grass-Fed Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4
Momentous Essential Grass-Fed Whey
Gluten-free
Grass-fed
Third-party tested
Sourced from European grass-fed dairy cows
HSA/FSA-eligible
Subscribe and save
Product Type
Grass-fed whey protein isolate sourced from European dairy cows
Price Per Serving
$2.19, or less if you subscribe
Protein Content
20g of protein per serving
Third-Party Testing
NSF Certified for Sport
Natural Shoppers
This formula is naturally sweetened and contains no artificial sweeteners, flavors, fillers, or dyes
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Easy Digestion
The addition of Momentous’ ProHydrolase enzyme blend helps for better digestion and absorption
Just Protein Please
With a low carb and fat content, you’ll be sure to be adding plenty of protein into your daily intake without adding too many other macros
Pros
Clean, high-quality ingredients
Third-party tested
Subscribe and save 10% (25% off your first order)
Free shipping on orders over $75
Cons
Expensive
Unflavored protein may clump when mixing
Price per serving
$2.19
Flavors
Chocolate, Vanilla, Unflavored
Total Servings
25
Protein Content
20g of whey isolate per serving

Scorecard for Momentous Essential Grass-Fed Whey

Overall Rating: average
Rating FactorsOur Scores
Label Accuracy Excellent
Bisphenols Excellent
Heavy Metals Meets Standard
Phthalates Excellent
Pesticides Excellent
Excellent = Top 10% Above Average = Top 25% Meets Standard = Top 50%

GGR collaborated with Ellipse Analytics, an accredited third-party lab, to test more than 150 protein powder products. We screened for dozens of factors and rated each product against its peers.

If you are willing to pay a bit more for a high-quality grass-fed whey protein, the Momentous brand is a solid choice. It is cold-pressed and put through a micro-processing filtration which is supposed to preserve the protein’s amino acid profile. While we cannot confirm that, we know it tastes darn good and didn’t upset any stomachs during our testing.

What our tester says:

“The Vanilla flavor was OK with water, but very good with milk. With milk, the flavor reminded me of vanilla bean ice cream.”

Momentous Grass-Fed Whey is sourced from cows in Europe, which has some of the strictest rules on what cows can eat and prohibits many of the hormones and artificial feeders used on American cows. In other words, you’re getting a higher quality product that results in a clean, easily digestible whey protein isolate.

Momentous Whey Protein powder being scooped into shaker bottle

“With milk, the flavor reminded me of vanilla bean ice cream,” says GGR Senior Editor and certified nutrition coach Nicole Davis, who rated the protein’s vanilla flavor a 4 out of 5. Anthony O’Reilly, GGR performance editor and a certified personal trainer, scores the solubility a 5 out of 5 and often only uses a straw to mix it into milk or his morning iced coffee.

momentous-essential-whey-lab-scorecard
Our site worked with an independent accredited lab, Ellipse Analytics, to test and rate more than 150 protein powders for purity (heavy metals, bisphenols, phthalates, and pesticides) and label accuracy (protein content). We then scored them and chose to feature products that ranked either (insert name for Top 10%), (Top 25%), or Top 50%.

Whey protein isolate has also had much of its lactose removed, making this a great option for those with dairy sensitivities. While the powder is digestible, some people may not be able to stomach the price—more than $60 for 24 servings. We think it’s worth it only if you’re looking for the highest quality protein powder money can buy, otherwise there are more affordable options on this list.

Before we get too many questions, yes using grass-fed dairy makes a difference. One study5 found that grass-fed dairy had a better ratio of omega-3/omega-6 fatty acids than grain-fed cows, which can help with joint and heart health and even reduce the frequency of certain headaches.

RELATED: Best Organic Protein Powder

Grass-fed dairy also has a higher antioxidant content than grain-fed dairy, which can be beneficial to your overall health6.

For those who have never gone on a bulking journey before, you should know that increased protein intake can cause some digestive issues (like the kind you really don’t want to happen on a date, if you catch my drift). Momentous fixes that problem by including a digestive enzyme blend to assist with digestion, which include protease enzymes. An October 2022 study7on mice concluded that protease was beneficial in improving gut health. 

Read more in our Momentous Essential grass-fed whey protein review.

Price$2.71 per serving/$64.95 per container
FlavorsChocolate, Vanilla, Unflavored
Protein per serving20 g
Whey protein typeGrass-fed whey protein isolate
Calories per serving90-100 (depending on flavor)
Added sugars0 g
Sweetener(s)Stevia
Servings per container24

Best Budget Whey Protein Powder: Optimum Nutrition Gold Standard 100% Whey

Good for: Anyone who wants a great-tasting whey protein powder at a value price

Best Budget Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.2
Optimum Nutrition Gold Standard 100% Whey
Multiple flavors
Third-party tested
5.5g BCAAs per serving
30-day return policy
Informed Choice certified
Product Type
Blend of whey protein isolate, concentrate, and hydrolysate
Price Per Serving
Starts at $1.17, depending on flavor and size
Protein Content
24g of protein per serving
Third-Party Testing
Informed Choice
Budget Shoppers
At $1.17 per serving, you can get a quality protein without breaking the bank
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Flavor Lovers
With 22 different flavors in their current lineup and new ones often added, you’ll never tire of the taste of ON Gold Standard
Pros
Affordable
Third-party tested
Plenty of flavors
Free shipping on orders over $75
Cons
Some users say it’s overly sweet
Contains artificial flavors
Some flavors contain sucralose
Price per serving
Starts at $1.17
Flavors
22 options including Cookies & Cream, S’mores, White Chocolate, Vanilla Ice Cream, Fruity Cereal, Double Rich Chocolate, and more
Total Servings
29 or 73
Protein Content
24g per serving

Scorecard for Optimum Nutrition Gold Standard 100% Whey

Overall Rating: excellent
Rating FactorsOur Scores
Label Accuracy Excellent
Bisphenols Excellent
Heavy Metals Excellent
Phthalates Excellent
Pesticides Excellent
Excellent = Top 10% Above Average = Top 25% Meets Standard = Top 50%

GGR collaborated with Ellipse Analytics, an accredited third-party lab, to test more than 150 protein powder products. We screened for dozens of factors and rated each product against its peers.

Optimum Nutrition Gold Standard 100% Whey is a team favorite for its budget-friendly prices and taste. Our team has tried multiple Optimum Nutrition flavors, and every one is ranked a 4 or 5 out of 5.

What our tester says:

“The Mocha Cappuccino flavor is chocolate-y with just the right amount of coffee flavor, so it’s great to mix with cold brew, and I also blend it with milk and a frozen banana for a smooth, chilly treat.”

Need to save on your whey? Optimum Nutrition’s 100% Whey is super affordable, with some options coming out to just over $1 per scoop—which gives it a perfect 5 out of 5 rating on cost. That’s a much more budget-friendly protein source than eggs, though we recommend going for a larger container to get the best deal (psst, did you know that protein powder can last a surprisingly long time if properly sealed).

Optimum Nutrition Gold Standard has 25 grams of protein and 5.5 grams of BCAAs per serving. All whey protein contains some BCAAs, but what makes this product unique is that it combines all three whey protein sources which means a larger variety of BCAAs. In each scoop, you’ll find a mix of whey protein concentrate, whey protein isolate, and hydrolyzed whey protein. That’s quite the trifecta.

Scoop of Optimum Nutrition Double Rich Chocolate protein powder with protein powder container

Plus, because whey isolate is the main ingredient, the fat and carbs remain low in this protein powder, making it great for people looking to lose fat and maintain muscle.

Third-party lab test results for Optimum Nutrition Gold Standard 100% Whey Vanilla Ice Cream
Our site worked with an independent accredited lab, Ellipse Analytics, to test and rate more than 150 protein powders for purity (heavy metals, bisphenols, phthalates, and pesticides) and label accuracy (protein content). We then scored them and chose to feature products that ranked either (insert name for Top 10%), (Top 25%), or Top 50%.

Our team of certified personal trainers and nutrition coaches have tried more than 10 Optimum Nutrition flavors, but two 5 out of 5 ones are Delicious Strawberry and Mocha Cappuccino. “It’s chocolatey and a bit coffee-flavored and just delicious,” nutrition coach and GGR head of content Nicole Davis says.

There are tons of other fun flavors: our pick for the best Optimum Nutrition flavor goes to Double-Rich Chocolate, but Mocha Cappuccino, Vanilla Ice Cream, and Chocolate Mint are also near the top of our list.

Optimum Nutrition contains whey protein concentrate, which may be harder for some people to digest, along with some additives and artificial sweeteners, but it’s still high quality and one of the best protein shakes

Read our full Optimum Nutrition 100% Whey Gold Standard Review for more.

Price$1.17 or $1.55 per serving/$44.99 or $85.99 per container
Flavors20 options
Protein per serving24 g
Whey protein typeBlend of whey protein isolate, whey protein concentrate, and hydrolyzed whey protein
Calories per serving110-130 (depending on flavor)
Added sugars0-1 g (depending on flavor)
Sweetener(s)Sucralose
Servings per container29 or 73

Best Whey Protein Powder for Muscle Gain: Kaged Whey Protein Isolate

Good for: People looking for the highest quality whey protein powder

Best Whey for Muscle Gain
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.5
Kaged Whey Protein Isolate
Gluten-free
Non-GMO
Third-party tested
Naturally flavored
60-day satisfaction guarantee
Subscribe and save
Product Type
Whey protein isolate
Price Per Serving
$1.46 per serving
Flavors
Chocolate Peanut Butter, Vanilla, Chocolate
Third-Party Testing
Informed Sport
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Easy to Digest
With less than 1g of lactose per serving plus digestive enzymes, this whey isolate is less likely to cause bloating or other digestive issues
Pros
Affordable
Third-party tested
Subscribe and save 10%
Good taste
Reviewers claim it’s easy on the stomach
Cons
Clumpy when mixed
Only 3 flavors available
Sweetened with sucralose
Price per serving
$1.46
Flavors
Chocolate, Vanilla, Chocolate Peanut Butter
Total Servings
25 or 44 per container
Protein Content
25g per serving

Scorecard for Kaged Whey Protein Isolate

Overall Rating: average
Rating FactorsOur Scores
Label Accuracy Excellent
Bisphenols Excellent
Heavy Metals Meets Standard
Phthalates Excellent
Pesticides Excellent
Excellent = Top 10% Above Average = Top 25% Meets Standard = Top 50%

GGR collaborated with Ellipse Analytics, an accredited third-party lab, to test more than 150 protein powder products. We screened for dozens of factors and rated each product against its peers.

Kaged Whey Protein Isolate is a fast-digesting protein available in five flavors with 25 grams of protein per serving.

What our tester says:

“It’s a bit chunky when mixed with cold milk or water in a shaker bottle, even using a shaker ball. I’ve also blended it in a shake with ice, and that ends up fine. Their Chocolate is one of the best chocolate proteins I’ve tried.”

Kaged Whey Protein Isolate was our choice for best whey protein for muscle gain for a couple of reasons: It contains only whey protein (no protein blends or fillers), has great taste, and has 25 grams of protein as well as key ingredients that may help with protein absorption.

Certified personal trainer Nicole Davis scored this chocolate whey protein powder a perfect 5 out of 5 on taste, saying it reminded her of a Carnation Instant Breakfast mix. Still, the solubility came in at 3.5 out of 5 because it was “lumpy” even after vigorous mixing, Nicole says.

kaged protein powder, woman scooping protein powder from bottle

In addition to a great taste and lack of fillers, Kaged Whey Protein Isolate contains a digestive enzyme called ProHydrolase that may enhance protein synthesis and help with muscle recovery. A January 2020 double-blind study8, the lone publicly available research on the enzyme, actually shows ProHydrolase has a minimal effect on protein absorption but did cause elevated amino acid concentration in well-trained athletes.  

GGR protein lab testing data scorecard for Kaged whey isolate
Our site worked with an independent accredited lab, Ellipse Analytics, to test and rate more than 150 protein powders for purity (heavy metals, bisphenols, phthalates, and pesticides) and label accuracy (protein content). We then scored them and chose to feature products that ranked either (insert name for Top 10%), (Top 25%), or Top 50%.

Amino acids, for those who don’t know, are the building blocks of protein molecules and there are two types: essential amino acids (EAAs) and non-essential amino acids. Essential amino acids are ones that must be obtained through diet because they’re not created in sufficient amounts by our body (we naturally make enough of the non-essential amino acids).

A December 2020 review9 of studies conducted on EAAs proved these compounds improved overall protein absorption. Proteins that have all EAAs are called complete proteins, whereas plant-based proteins (with the exception of soy) are incomplete proteins because they’re deficient in some EAAs. This is why most vegan protein powders are a blend of different plant-based protein sources (such as pea protein or pumpkin seed protein).

One of the reasons we love this particular whey protein was because it came with more than 40 servings per container (anywhere from 41 to 44, depending on the flavor). Sure, the container might be a bit expensive at around $60 (before shipping), but it’ll last you longer. 

If that’s too big, you can get containers with 25 servings. Most protein powders tend to come with 25 to 30 scoops per container so this is typical but we definitely prefer the larger containers when they are available.

Read our in-depth Kaged whey protein isolate review for more information.

Price$1.46 per serving/$59.99 per container
FlavorsChocolate Peanut Butter, Vanilla, Chocolate
Protein per serving25 g
Whey protein typeWhey protein isolate
Calories per serving110-120 (depending on flavor)
Added sugars0 g
Sweetener(s)Stevia, sucralose
Servings per containerAbout 41

Best Hydrolyzed Whey Protein: Dymatize ISO 100

Good for: Anyone looking for a whey protein that won’t upset their digestive system

Best Hydrolyzed Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.09
Dymatize ISO 100
Budget-friendly
Multiple flavors
Third-party tested
5.5g of BCAAs
Informed Choice certified
Subscribe and save
Product Type
Hydrolyzed whey protein isolate
Price Per Serving
As low as $1 per serving, depending on the flavor and container size
Flavors
Gourmet Vanilla, Gourmet Chocolate, Fruity Pebbles, Cocoa Pebbles, Fudge Brownie, Birthday Cake, Dunkin’ Cappuccino, and more
Third-Party Testing
Informed Choice
Athletes
Third-party testing means it’s safe for those who may be subject to drug testing
Easy to Digest
Hydrolyzed protein powder helps with easier digestion and faster absorption
Flavor Lovers
With 13 flavors including fun collabs with Fruity Pebbles and Dunkin’, you’ll be sure to find a great flavor every purchase
Pros
Multiple flavor options
Third-party tested
Fast absorption and easy digestion
Includes 5.5 g of BCAAs
Budget-friendly
Cons
Contains sucralose and stevia
Some complaints on the quantity in container
Price per serving
As low as $1, depending on the flavor and container size
Flavors
13 options, including Gourmet Vanilla, Gourmet Chocolate, Fruity Pebbles, Cocoa Pebbles, Fudge Brownie, Birthday Cake, Dunkin’ Cappuccino, and more
Total Servings
20, 45, or 71 per container
Protein Content
25g per serving

Scorecard for Dymatize ISO 100

Overall Rating: average
Rating FactorsOur Scores
Label Accuracy Excellent
Bisphenols Excellent
Heavy Metals Meets Standard
Phthalates Excellent
Pesticides Excellent
Excellent = Top 10% Above Average = Top 25% Meets Standard = Top 50%

GGR collaborated with Ellipse Analytics, an accredited third-party lab, to test more than 150 protein powder products. We screened for dozens of factors and rated each product against its peers.

Available in 13 different flavors, Dymatize ISO 100 is stacked with 25 grams of protein, including 5.5 grams of BCAAs and 4.4 grams of glutamine designed to enhance muscular growth and recovery.

What our tester says:

“The Fruity Pebbles is so good…I’ve made a protein ice cream with it, and it’s been a nice little treat for me every now and then after dinner.”

Hydrolyzed whey proteins are pre-digested compounds that, according to some researchers (more on that in a bit), allows the protein molecules to be absorbed more rapidly than standard whey protein. On top of using those hydrolyzed proteins, Dymatize ISO 100 also utilizes whey protein isolate—which as a reminder has had much of the lactose removed for easier digestion. For those reasons, and because you get 25 grams of protein per serving with minimal carbs and fats, we rated it a 5 out of 5 on formulation.

Dymatize is a popular protein brand because they partner with well-known companies like Dunkin Donuts and Fruity Pebbles, and while many customers seem to love these nostalgic flavors our testers felt they were just alright. Certified sports nutrition coach and former GGR writer Amanda Capritto gave the Cocoa Pebbles flavor a 3.5 out of 5.

A container of A container and scoop of Dymatize ISO 100 next to a half-full shaker cup.

“I like it, but I wouldn’t say it’s largely better than other chocolate protein powders,” she says in our Dymatize ISO 100 review. “It’s rich enough when mixed with milk (regular or plant-based; I like it with unsweetened vanilla almond milk), but mixed with water, the flavor isn’t very strong.”

The price per serving fluctuates based on the total servings and sales, and while this isn’t the most expensive protein powder there are more affordable options. We rated the price a 3.5 out of 5 because it tends to hover around $1.50 per scoop.

On the bright side, it earned a 4 out of 5 on solubility and there were no side effects. Because it’s Informed Choice-certified, meaning it’s been third-party tested for label purity and banned/unsafe ingredients, it earns a 5 out of 5 on transparency.

RELATED: Whey Protein Vs Hydrolyzed

PriceStarts at $ 1.67 per serving / $33.43 per container
FlavorsMultiple flavors
Protein per serving25
Whey protein typeHydrolyzed whey protein, whey protein isolate
Calories per serving120
Added sugars0 g
Sweetener(s)Sucralose, stevia
Servings per container20 – 76

Best Unflavored Whey Protein: Isopure Whey Protein Isolate

Good for: Those looking for a plain protein that can be used in baking or smoothies

Best Unflavored Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
4.2
Isopure Whey Protein Isolate
Sugar-free
Gluten-free
Lactose-free
100% whey protein isolate
Free shipping for orders over $75
Subscribe and save
Product Type
100% unflavored whey protein isolate
Price Per Serving
Starts at $2.12 per serving
Flavors
Unflavored
Third-Party Testing
No
High-Protein Cooks
Unflavored protein powder can easily be blended into smoothies, or added to your favorite cooking or baking recipes
Just Protein Please
With no carbs or fat, Isopure Zero Carb Whey Isolate guarantees you’re getting just protein with each serving
Low-Carb Diets
With zero carbs per serving, this is an excellent way to add protein to your diet without any extra carbohydrates
Pros
Pure whey isolate
Sugar- and fat-free
Lactose-free
Subscribe-and-save options
Cons
Only unflavored available
Some customers report an odd taste when mixed with water
Pricier protein
Price per serving
Starts at $2.12 per serving
Flavors
Unflavored
Total Servings
16 or 47
Protein Content
25g of whey isolate per serving

If you’re looking for a pure whey protein isolate, a great option is Isopure Unflavored Whey Protein Isolate. This isolate is 100% whey with no carbohydrates and fats, making it sugar-free and lactose-free. This protein powder is available in 16 servings or 47 servings.

What our tester says:

“I add this to my family’s soups and you can’t even tell. My other favorite thing to put this in is my kids’ pancakes. They can’t tell there’s any difference, and I feel better feeding them something that isn’t just straight carbs or sugar.”

Unflavored protein powders should be easy to find, but in our experience Isopure Whey is one of the few options that’s actually tasteless and works well in protein shakes, smoothies, or even baking recipes (protein waffles, anyone?). “I have added this to several different foods, and while the texture may have been altered slightly, I never really notice a change in flavor which is great,” says Brittany Combs, home gym owner and GGR’s social media manager. She gave it a 5 out of 5 on taste.

“I add this to our soups and you can’t even tell,” she explains in our Isopure Protein review. “My other favorite thing to put this in is my kids pancakes. They cannot tell there is any difference, and I feel better feeding them something that isn’t just straight carbs/sugar.”

woman-holding-isopure-protein-whey

Part of the reason Brittany is able to sneak extra protein into her kids’ diet is the powder dissolves easily into just about any liquid and received a 5 out of 5 on solubility.

As long as you stick with the unflavored version there are only two ingredients: whey protein isolate (which has had most of its lactose removed) and soy lecithin, which is used to maintain texture. There are 25 grams of protein per scoop with zero grams of carbs and fat, so it gets a 5 out of 5 on the formulation front.

The one downside is that you’ll be paying more per scoop if you get a smaller bag, so you’ll have to buy a larger container if you want to get the most value.

PriceStarts at $2.12 per serving / $33.99 per container
FlavorsUnflavored
Protein per serving25
Whey protein typeWhey protein isolate
Calories per serving100
Added sugars0 g
Sweetener(s)N/A
Servings per container16, 47, 70

Best Organic Whey Protein Powder: Orgain Grass-Fed Whey

Good for: Those who prioritize organic ingredients

Best Organic Whey
GGR Score
We test and review fitness products based on an independent, multi-point methodology.
3.75
Orgain Grass Fed Whey Protein
No added sugars
Gluten-free
Grass-fed
Gluten-free, soy-free, and non-GMO
60-day return policy
Subscribe and save
Product Type
100% New Zealand-sourced grass-fed whey protein concentrate
Price Per Serving
Starts at $2 per serving
Flavors
Creamy Chocolate Fudge, Vanilla Bean
Third-Party Testing
No
Natural Shoppers
Sourced from New Zealand grass-fed cows, this organic whey protein is free of gluten, soy, and has no added sugars
Customers First
Orgain has great customer service and a nice 60-day return and refund policy to keep customers coming back
Pros
Clean ingredients
No added sugars
Non-GMO certified
Subscribe-and-save options
Cons
Sweetened with stevia and erythritol
Only 2 flavors available
Mixed reviews on taste
Price per serving
Starts at $2 per serving
Flavors
Creamy Chocolate Fudge, Vanilla Bean
Total Servings
20
Protein Content
21g of whey concentrate per serving

Orgain Organic Grass Fed Whey Protein Powder delivers 21 grams of clean, grass-fed whey protein that’s great on its own or when used for baking.

What our tester says:

“Vanilla Bean tastes like vanilla. It’s nothing special but not offensive either. It mixes well enough, too, with just a few floaties after mixing it in a shaker bottle.”

Orgain Grass-Fed Whey uses mostly organic ingredients, meaning they contain fewer pesticides than non-organic compounds found in other protein powders. There is some research that claims organic ingredients may contain more nutrients, while others claim there’s just as much evidence that shows there’s very little difference (from a nutrition standpoint) between the two.

We rated the overall formulation a 4 out of 5 because while they use organic ingredients and source their dairy from New Zealand cows — which eat more grass than most American cows and are not allowed to be treated with growth hormones — it contains more carbs and fat than we typically like to see in a protein powder.

The taste as well was a bit average for our tastebuds, though the customer reviews seem to disagree (they liked it more than us). “Tasted like vanilla,” says Anthony O’Reilly, certified nutrition coach and GGR performance editor. “Nothing special but nothing offensive either.” He gave it a 3.5 out of 5.

On solubility, it earned a 4 out of 5 with one point being docked for a few floaters. “Nothing significant,” Anthony adds. He notes that it’s one of the few proteins that caused a little gassiness, so he gave the effects category a 4 out of 5.

While this protein powder should do well for the average person, athletes should proceed with caution. Orgain’s facilities are monitored for best practices, but the powder is not third-party tested so it’s unclear if there are any banned substances that might show up on a drug test.

PriceStarts at $2.00 per serving/ $39.99 per container
FlavorsCreamy Chocolate, Vanilla Bean
Protein per serving21
Whey protein typeWhey protein concentrate
Calories per serving130
Added sugars0 g
Sweetener(s)N/A
Servings per container16, 47, 70

Other Whey Protein Powders We Researched 

The whey protein powders in our top 13 only represent a small fraction of the protein supplements available today. Here are a few others we came across in our research: 

  • Simply Tera’s Whey: This protein powder actually has some good macros (21 grams of protein, four grams of carbs, and one and a half grams of fat) but it’s geared toward bakers more than athletes. So if you’re looking for a way to bulk up your next batch of cupcakes with some protein, this might be the solution. Amazon customer reviewers loved the taste. 
  • Natreve MOOLESS Animal Free Whey Protein Powder: Natreve claims to have created a man-made whey protein without milking cows. It’s an interesting concept, and one that plant-based followers might be curious about, but we haven’t tried it. There also appear to be no scientific studies on this animal-less whey protein powder. Its nutritional value, however, is quite good—20 grams of protein, five grams of carbs, and 0.5 grams of fat. 
  • Swolverine Whey Protein Isolate: Our testers found this protein supplement to be a bit too thin for their liking.

RELATED: Best Pre-Workout for Women

How We Picked and Tested the Best Whey Protein Powder

Here are a few things we kept in mind when creating our list of the best whey protein: 

  • Protein content: How much protein did each scoop contain? Does it come from easily digestible whey protein isolate or whey protein concentrate, the latter of which contains more lactose and may cause digestive issues.
  • Carb and Fats: How much of the other macronutrients were present and were they in low and/or moderate amounts? 
  • Digestibility: Did the whey protein cause any digestive issues such as bloating?  
  • Dairy quality: Is the whey protein sourced from cows who are hormone-free, pesticide-free, and antibiotic-free?  
  • Solubility: How well does this product dissolve in the suggested amount of liquid? Are there floaties? Is it grainy? Is it super thick or super thin? Does it separate after a few minutes?
  • Flavor: How was the taste? We considered the notes from our expert product testers and customer reviews (because everyone’s taste is a bit different).
  • Transparency and third-party testing: Since dietary supplements are not approved by the FDA, having an independent third-party lab verify that what’s on the label is what’s in the protein powder is super important, especially for athletes. Transparency also plays a part in this—does the company provide COAs, not use proprietary blends, and generally seem very upfront about what’s used in their protein powder and why?
  • Price: How much did the container cost and what was the cost per serving? 

RELATED: Best Protein Chips

Scoop of Sascha fitness hydrolyzed whey protein powder with container and shaker bottle

Benefits of Whey Protein Powder

Wondering why you should consider purchasing or using whey protein? Here are just a few reasons: 

  • Convenience: It’s much easier and quicker to drink some whey protein than it is to make an entire meal with the same protein content. 
  • Shelf stable: Whey protein can last quite a while if its container is properly sealed. 
  • Builds muscle: Whey protein along with a good strength-training program can help the body create muscle and preserve lean muscle mass1.
  • Lose weight: Protein powder can also benefit those looking to lose weight by placing themselves in a caloric deficit1.

RELATED: Whey Protein Benefits

How Much Whey Protein Should I Take?

An image of macros for weight loss

Let’s be clear; the majority of protein you get each day should be coming from whole food sources and high-protein foods. That’s why we call them “supplements,” as they should supplement a balanced diet of fats, carbohydrates, and protein.

The USDA suggests a recommended dietary allowance (RDA) of 0.8 grams of protein per kilogram of body weight each day11 for adults. However, reputable organizations like the International Society for Sports Nutrition suggest a larger amount, between 1.2 and 2.0 grams per kilogram of body weight per day12. A larger amount is especially important if your goal is weight loss or muscle gain.

RELATED: How Much Protein Do I Need?

If you’re trying to increase your protein intake, then protein powder is great way to add some extra protein without too much hassle. A scoop or two each day can help get you to meet daily quotas. Much more than that, however, and you may want to look into how you can adjust your diet to add more whole foods that are rich in protein.

RELATED: When To Take Protein Powder

Buying Guide: What to Look for in the Best Whey Protein Powder  

Here’s what you should look for when you’re trying to purchase the best whey protein for your fitness and wellness goals:  

  • Caloric content: Are you looking to add muscle mass and want a high-calorie protein powder or are you on a weight-loss journey and want a low-calorie option? 
  • Protein content: Regardless of your goal, you’ll want at least 25-30 grams of protein per serving, but servings as low as 20 grams can support muscle building activities and weight loss1.
  • Dairy quality: Are the cows well taken care of or are they pumped full of hormones?  
  • Taste: Do you enjoy drinking it? Some companies also offer unflavored products if you’re looking to just add protein to your morning smoothies.
  • Price: This shouldn’t have to be explained, but find a whey protein that agrees with your wallet. 
  • Protein source: Does the protein source just contain whey protein or is it mixed with casein or plant-based proteins?  
  • Additives: Did the company put in added sugars, probiotics, or anything else that might alter your experience with this whey protein? Check the ingredients. 

RELATED: Casein Protein Vs Whey

Package of Momentous Whey Protein and protein powder being scooped into shaker bottle

Protein Powder Subscriptions: What Are They and Are They Worth It? 

You might find the option on some of the best whey proteins to “subscribe and save.” This refers to putting your whey protein powder on a subscription basis so you always have protein on hand, which can be set up on most companies’ websites and on Amazon.

The delivery frequency can be anywhere from two weeks to six months. 

Companies will often knock a few bucks off a container’s price since they know you’ll be a repeating customer next month. 

RELATED: Muscle Milk Review

Types of Whey Protein

There are three main types of whey protein: whey protein concentrate, whey protein isolate, and whey protein hydrolysate. All three come from whey, which is a byproduct of cow’s milk. The whey is then processed and filtered and can become one of the three types of protein.

Whey Protein Concentrate

Made up of 30 to 89 percent protein, with the rest of the calories coming from carbohydrates (lactose) and fats.

Whey Protein Isolate

A more filtered form of whey protein that’s made up of at least 90 percent protein. Much of the lactose has been removed from whey protein isolate (WPI), so those with dairy sensitivities may be able to drink it.

Garden of Life Grass Fed Whey protein powder being scooped into shaker bottle

Whey Protein Hydrolysate

A pre-digested form of whey protein that’s undergone partial hydrolysis.

Potential Side Effects of Whey Protein Powder

Most people won’t experience side effects when taking whey protein powder, but if it’s consumed in excess you may experience changed bowel movements, acne, bloating, reduced appetite, fatigue, headaches, and nausea.

RELATED: The Best Alternatives To Whey Protein

FAQs About Best Whey Protein Powder

What is the best whey protein powder?

Our picks for the best whey protein powders are:  

Which brand of whey protein is best?

We love Transparent Labs 100% Grass-Fed Whey Protein Isolate and believe that Transparent Labs is a brand you can trust with your supplement needs. They offer a variety of whey protein products that are available in many different flavors. Their supplements are made from high-quality ingredients and taste great.

Is whey protein actually effective?

According to research10, consuming whey protein can have a positive impact on your body’s overall protein anabolism, which can promote muscle and strength development. Whey protein also contains leucine which helps with weight management and promotion of healthy blood glucose metabolism.

What is the No. 1 whey protein shake?

Our top pick for the best whey protein powder is from Transparent Labs, particularly their 100% Grass-Fed Whey Isolate. Whey isolate is one of the most bioavailable forms of protein1, meaning it’s readily absorbed and used by your body; also it’s easier to digest in its isolate form. With it being certified by Informed Choice, athletes can also rest assured it’s free of banned substances.

RELATED: Transparent Labs Protein Review

If you’re looking for pre-made protein shakes, I recommend you check out our picks for the best protein shakes, with whey options and other milk- and plant-based shakes.

Is whey the highest quality protein?

Whey is indeed one of the highest quality sources of protein when looking at supplements. While nothing is better than a diet rich with high-protein foods, whey is one of the most bioavailable forms of protein powder, meaning your body absorbs and uses more of it. Additionally, whey protein is a complete protein, meaning it contains all nine essential amino acids that aren’t produced naturally in the body.

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

References

  1. Kadam,  B., Ambadkar, R., Rathod, K., &  Landge, S. (2018). Health Benefits  of Whey- A Brief Review. International Journal of Livestock Research, 8(5), 31-49. doi: 10.5455/ijlr.20170411022323
  2. A Castro LH, S de Araújo FH, M Olimpio MY, B de B Primo R, T Pereira T, F Lopes LA, B S de M Trindade E, Fernandes R, A Oesterreich S. Comparative Meta-Analysis of the Effect of Concentrated, Hydrolyzed, and Isolated Whey Protein Supplementation on Body Composition of Physical Activity Practitioners. Nutrients. 2019 Sep 2;11(9):2047. doi: 10.3390/nu11092047. PMID: 31480653; PMCID: PMC6769754.
  3. Layman DK, Lönnerdal B, Fernstrom JD. Applications for α-lactalbumin in human nutrition. Nutr Rev. 2018 Jun 1;76(6):444-460. doi: 10.1093/nutrit/nuy004. PMID: 29617841; PMCID: PMC5934683.
  4. Arroyo-Cerezo A, Cerrillo I, Ortega Á, Fernández-Pachón MS. Intake of branched chain amino acids favors post-exercise muscle recovery and may improve muscle function: optimal dosage regimens and consumption conditions. J Sports Med Phys Fitness. 2021 Nov;61(11):1478-1489. doi: 10.23736/S0022-4707.21.11843-2. Epub 2021 Feb 15. PMID: 33586928.
  5. Benbrook, C. M., Davis, D. R., Heins, B. J., Latif, M. A., Leifert, C., Peterman, L., Butler, G., Faergeman, O., Abel-Caines, S., & Baranski, M. (2018). Enhancing the fatty acid profile of milk through forage-based rations, with nutrition modeling of diet outcomes. In Food Science & Nutrition (Vol. 6, Issue 3, pp. 681–700). Wiley. https://doi.org/10.1002/fsn3.610
  6. van Vliet, S., Provenza, F. D., & Kronberg, S. L. (2021). Health-Promoting Phytonutrients Are Higher in Grass-Fed Meat and Milk. In Frontiers in Sustainable Food Systems (Vol. 4). Frontiers Media SA. https://doi.org/10.3389/fsufs.2020.555426
  7. Kostiuchenko O, Kravchenko N, Markus J, Burleigh S, Fedkiv O, Cao L, Letasiova S, Skibo G, Fåk Hållenius F, Prykhodko O. Effects of Proteases from Pineapple and Papaya on Protein Digestive Capacity and Gut Microbiota in Healthy C57BL/6 Mice and Dose-Manner Response on Mucosal Permeability in Human Reconstructed Intestinal 3D Tissue Model. Metabolites. 2022 Oct 26;12(11):1027. doi: 10.3390/metabo12111027. PMID: 36355110; PMCID: PMC9696696.
  8. Townsend JR, Morimune JE, Jones MD, Beuning CN, Haase AA, Boot CM, Heffington SH, Littlefield LA, Henry RN, Marshall AC, VanDusseldorp TA, Feito Y, Mangine GT. The Effect of ProHydrolase® on the Amino Acid and Intramuscular Anabolic Signaling Response to Resistance Exercise in Trained Males. Sports (Basel). 2020 Jan 22;8(2):13. doi: 10.3390/sports8020013. PMID: 31978998; PMCID: PMC7077235.
  9. Church DD, Hirsch KR, Park S, Kim IY, Gwin JA, Pasiakos SM, Wolfe RR, Ferrando AA. Essential Amino Acids and Protein Synthesis: Insights into Maximizing the Muscle and Whole-Body Response to Feeding. Nutrients. 2020 Dec 2;12(12):3717. doi: 10.3390/nu12123717. PMID: 33276485; PMCID: PMC7760188.
  10. Stokes T, Hector AJ, Morton RW, McGlory C, Phillips SM. Recent Perspectives Regarding the Role of Dietary Protein for the Promotion of Muscle Hypertrophy with Resistance Exercise Training. Nutrients. 2018 Feb 7;10(2):180. doi: 10.3390/nu10020180. PMID: 29414855; PMCID: PMC5852756.
  11. Hudson, J. L., Wang, Y., Bergia Iii, R. E., & Campbell, W. W. (2020). Protein Intake Greater than the RDA Differentially Influences Whole-Body Lean Mass Responses to Purposeful Catabolic and Anabolic Stressors: A Systematic Review and Meta-analysisAdvances in nutrition (Bethesda, Md.)11(3), 548–558. https://doi.org/10.1093/advances/nmz106
  12. Carbone, J. W., & Pasiakos, S. M. (2019). Dietary Protein and Muscle Mass: Translating Science to Application and Health BenefitNutrients11(5), 1136. https://doi.org/10.3390/nu11051136

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