10 Best Whey Protein Isolate on the Market 2023

Whey protein isolate is whey protein concentrate that has been further processed to remove most of the lactose and fat. Due to its high protein content and low amounts of fat, lactose, and carbs, this type of protein is well-liked by athletes, bodybuilders, and fitness enthusiasts.

The main difference between Whey Protein Isolate and other types of protein, such as Whey Protein Concentrate (WPC) and Casein, lies in their composition and processing:
  • Protein content: When compared to Whey Protein Concentrate, which usually consists of between 70 and 80% protein, Whey Protein Isolate typically contains 90 or more percent protein. This makes WPI a more concentrated protein source.
  • Fat and lactose content: Whey protein isolate goes through further processing to remove the majority of the lactose and fat, making it a better choice for those who has lactose intolerance or trying to cut back on their fat intake.
  • Digestion and absorption: WPI is typically easier to digest and absorb than Whey Protein Concentrate, which may cause digestive pain in certain people, due to its low fat and lactose levels.

Best Whey Protein Isolate on the Market

1. Dymatize ISO100 Hydrolyzed Protein Powder, 100% Whey Isolate

Dymatize ISO100 Hydrolyzed Protein Powder, 100% Whey Isolate


Dymatize ISO100 is scientifically formulated and has a legendary nutritional profile for Hydrolyzed Whey Protein Powder. Each easy-mixing, fast-absorbing, easy-digesting serving has 25 grams of high-quality protein from 100% whey protein isolate.

*Some of the whey protein isolate in ISO100 is Hydrolyzed, which means that it is super-fast absorbing and has been filtered to remove excess lactose, fats, carbs, and cholesterol. 

Ingredients
Hydrolyzed Whey Protein Isolate, Whey Protein Isolate, Natural and Artificial Flavor. Less Than 1% of: Salt, Soy Lecithin, Sucralose, Steviol Glycosides (Stevia) .

Ratings: 4.4 out of 5 - more than 22,470 global ratings

This product brought back the nostalgia of that and it tastes really good! Also hydrolized whey makes all the difference because it digests so fast and doesnt hurt your stomach. i never leave reviews so blv me.



2. Isopure Unflavored Protein, Whey Isolate

Isopure Unflavored Protein, Whey Isolate


Isopure Unflavored WPI powder contains 25 grams per serving of 100% Whey Protein Isolate, stripped of fat, carbs, fillers, sugars and lactose. Easy to add to any food and beverage (hot or cold), and so pure you won't even taste it. 

Isopure Whey Protein Isolate has 5.67 g of naturally occurring BCAA's in every serving and is Lactose and Gluten Free. It also has 2.57 grams of naturally occurring L-Glutamine in every serving. There are no additives just pure, naked protein. 

Ingredients
Whey Protein Isolate, Soy Lecithin.

Ratings: 4.4 out of 5 - more than 33,600 global ratings

I’m new to protein powder. But this has exceeded my expectations. My cramping has completely disappeared. My muscles feel wonderful. If I skip a day, my feet start to cramp again. 30 minutes after drinking a shake. My muscles are back to normal. I’ll be using this the rest of my life!



3. Bulksupplements.com Whey Protein Isolate Powder

Bulksupplements.com Whey Protein Isolate Powder


Whey Protein Isolate, ISO Protein Powder, is one of the most quickly absorbed proteins available, making it the perfect choice for post-workout recovery.* This Whey Protein Powder, which is a flavorless protein powder, helps to rebuild muscle tissue and promote growth, allowing you to achieve your goals faster.*

All Whey Protein Powder Isolate by BulkSupplements are manufactured according to cGMP Standards to ensure the highest quality for manufacturing, packaging, labeling, and holding operations. We third party test our tasteless protein powder at multiple stages during production, procedures and equipment to ensure compliance, standards and consistency.

Ingredients
Whey Protein Isolate, Sunflower Lecithin

Ratings: 4.5 out of 5 - more than 7,900 global ratings

I have decades of experience with lifting and with protein powders. As such, I have tried a seemingly endless variety of different whey protein powders, and the non flavored ones were particularly noteworthy in not just being tasteless, but unpalatable. A desire to get away from any kind of added sugars had me take a chance on this product. I was ecstatic at how it tasted and how well it mixed. I take a no frills approach in that I only mix it with water and this product is highly recommended by me.



4. NOW Sports Nutrition, Whey Protein Isolate

NOW Sports Nutrition, Whey Protein Isolate


NOW Sports products are comprehensively tested so you can trust that our products are pure and effective for every level of athletics.

- Protein Powder With Bcaas
- Unflavored, No Artificial Sweeteners
- Gmp Quality Assured

Ingredients
Calcium, Potassium, Phosphorus, Magnesium, Microfiltered Whey Protein Isolate (milk) (providing ß-lactoglobulin, a-lactalbumin, Immunoglobulins and Glycomacro Peptides) and Sunflower Lecithin (<1%). Contains no sugar, salt, starch, yeast, wheat, gluten, corn, egg or preservatives.

Ratings: 4.3 out of 5 - more than 7,300 global ratings

Have been using Now Sports Whey Protein Isolate off and on over the past two years, comparing it to other brands and forms of protein mix. I think it is the best overall product: no gimmicks; smooth and thorough mixing; mixes well with blended fruits or juices. At age 57 I am not an expert body builder or accomplished athlete, but I have run the gambit with supplements, etc. After many years of rather faithful - amateur - weight lifting I have found to keep my regiment of supplements few and focused. I use 3 and this product is one of them.



5. Nutricost Whey Protein Isolate





Nutricost Whey Protein Isolate Powder contains 30 Grams of protein in each serving (scoop included) of this high-quality, carefully formulated, whey protein powder.

- 2 Pounds of Delicious Mocha Whey Protein Isolate
- Only The Best, Undenatured, Isolate
- Made in a GMP Compliant, FDA Registered Facility

Ingredients
Whey Protein Isolate (whey protein, sunflower lecithin), Natural & Artificial Flavors, Cocoa Powder, Sodium Chloride, Acesulfame Potassium, Sucralose.

Ratings: 4.5 out of 5 - more than 6,000 global ratings

I use the unflavored whey protein isolate, because it makes it so much easier to add it to other things. I can add it to my soup, I can add it to my eggs, I can add it to my salad dressing. Oil and vinegar and chocolate salad dressing not so appetizing lol. But the unflavored powder makes it easy to add to most things. And also is good for mixing flavors just a little bit of bananas and strawberry, yum. Or bananas and peanut butter. It allows better control over my calories. And I've had great results with building muscle mass using this product.



6. Garden of Life Sport Certified Grass Fed Clean Whey Protein Isolate

Garden of Life Sport Certified Grass Fed Clean Whey Protein Isolate



Certified Grass Fed Whey is designed to refuel and repair muscles. Intensive training and exercise breaks down muscle tissue and then the body repairs and rebuilds to make them stronger. Our premium quality, clean Certified Grass Fed Whey is not only free of hormones and antibiotics, but we are also very proud to have the only Non- GMO Project Verified Whey. 

Moreover, due to these third-party certifications, Certified Grass Fed Whey is also NSF Certified for Sport and Informed-Choice for Sport Certified. You can rest assured there are no athletic banned substances in this clean whey protein.

Ingredients
Truly Grass Fed Protein Blend: (Whey Protein Isolate 85%, Milk Protein 15%), Organic Tapioca Fiber (IMO), Organic Vanilla Flavors, Organic Gum Acacia, Organic Erythritol, Sea Salt, Sunflower Lecithin, Organic Stevia Extract (leaf), 2 Billion CFU Bifidobacterium lactis Bl-04. Contains: Milk. Made without soy, tree nuts, added sugars, filler ingredients, nor artificial colors, flavors, sweeteners or preservatives. Manufactured in a facility that also processes egg, soy and tree nuts.

Ratings: 4.6 out of 5 - more than 3,900 global ratings

Have been using this product for several months now and highly recommend it. The ingredients are top quality, the flavor is great in a smoothie with almond milk, ice and a banana mixed in and I've not had any stomach discomfort or digestive troubles while using this. Very good choice for muscle building supplement.



7. NutraBio 100% Whey Protein Isolate - Complete Amino Acid Profile

NutraBio 100% Whey Protein Isolate - Complete Amino Acid Profile


NutraBio uses only the best, and our Isolate is no exception. We use high grade, cold processed, ultra-filtered WPI 90; the purest isolate available. Our protein is also non-GMO, soy free, low carb, low calorie, low cholesterol, kosher dairy, contains no fat, no additives, and no added sugar.

Our whey isolate is low in carbs and contains no fat, making it ideal for anyone on a diet and also keto-friendly. Our pure whey isolate can help any gym-goer build lean muscle mass.

You won’t find any fillers or fluff in our protein powder! Our Isolate contains zero dextrose, maltodextrin, dairy creamer, or other junk. It’s also suitable for lactose sensitive individuals.

Ingredients
Whey Protein Isolate, Natural & Artificial Flavors, Xanthan Gum, Salt, Sucralose, Acesulfame Potassium

Ratings: 4.5 out of 5 - more than 3,000 global ratings

Excellent whey protein... never have had any digestive upset w this product and have struggled w many protein powders before finding this 100% lactose free whey protein. Been using for close to 2 years and highly recommend.



8. Myprotein Impact Whey Isolate Powder - Vanilla

Myprotein Impact Whey Isolate Powder - Vanilla


Premium whey packed with 18g of protein per serving, for the everyday protein you need from a quality source. Gluten free. Ranked Grade A by independent tester Labdoor for both quality and value, Impact Whey isolate is officially certified as one of the best protein powders on the market.

It also includes 2.5g of glutamine and all the essential amino acids, including 4.5g BCAAs— these naturally occur in protein which helps to build and repair new muscle1 — so you’re always ready for the next session. Always provide your body with convenient, high-quality protein, which contributes to the growth and maintenance of muscle mass — making sure you’re getting the protein you need, each and every day.

Ingredients
Whey Protein Concentrate (Milk) (96%), Emulsifier (Soy Lecithin), Flavouring, Sweetener (Sucralose)

Ratings: 4.5 out of 5 - more than 2,600 global ratings

Digests without irritating my stomach. As someone with gastritis this a consistent issue I've had with protein powders. I just add half a tablespoon of peanut butter and Nutella and it tastes better any of the flavoured varieties that leave an aftertaste that lasts a millenia



9. Kaged Whey Protein Powder: 100% Whey Protein Isolate

Kaged Whey Protein Powder: 100% Whey Protein Isolate


Whey Protein Isolate powder delivers 25g of whey protein per serving. Withfull-spectrum BCAAs and EAAs, this fast-acting protein shake saturates s with nutrients scientifically shown to help build rock-hard.*

Our advanced whey isolate protein powder utilizes ProHydrolase, a premium enzyme blend that enhances protein digestion, absorption and utilization, helping you get more out of every, single scoop.*

We use natural flavors to achieve a luscious milkshake taste, with no dyes, or artificial flavoring. The protein source is 100% whey protein isolate, with no amino spiking, protein blends, or concentrates.

Ingredients
Whey Protein Isolate, Sunflower Lecithin, ProHydrolase® Protease Enzyme Blend, Stevia Rebaudiana Leaf Extract, Sea Salt, Sucralose Contains: Milk

Ratings: 4.5 out of 5 - more than 1,000 global ratings

I’ve been taking Kaged Muscle products for over two years now and I would say it’s probably the cleanest line of products on the market. Any of the Kaged Muscle line is worth trying if you care about your health. Highly recommend, thanks Kris!!!



10. Body Fortress Super Advanced Isolate Protein Powder

Body Fortress Super Advanced Isolate Protein Powder


This whey protein isolate powder contains 60 grams of protein delivering 12 grams of BCAAs (per two scoops) to boost post workout recovery and build lean muscle and strength. State-of-the-art purification in this whey protein powder blend creates a highly concentrated protein isolate with reduced amounts of unwanted fat, carbohydrates, and cholesterol compared to protein concentrates. 

This Body Fortress protein powder is the ideal multi-functional formula for a pre and post workout recovery drink, a vanilla protein shake between meals, or a muscle recovery protein supplement before bed.

Ingredients
Tri-Phase Isolate Matrix (Milk Protein Isolate, Whey Protein Isolate, Supro 661 Soy Protein Isolate), Natural and Artificial Flavors, Soy Lecithin, Acesulfame Potassium, Sucralose, Carrageenan.

Ratings: 4.5 out of 5 - more than 4,000 global ratings

This Protein Powder is well endowed with Protein, nutrients, amino acids and works really well, and it tastes wonderful (I like the Vanilla). It works well alone and is fabulous in smoothies.


FAQ

a. Is Protein Whey Powder Good For You?

Yes, some benefits of whey protein include the following: 

a. Building and maintaining muscle mass
Whey protein is a high-quality source of protein that is easily absorbed by the body, making it an ideal choice for athletes and bodybuilders looking to build and maintain muscle mass.

b. Weight management
Some studies have suggested that consuming whey protein as part of a calorie-controlled diet can help with weight loss and management, by increasing feelings of fullness and reducing overall calorie intake.

c. Improving immune function
Whey protein contains compounds called immunoglobulins, which can help to boost the immune system.

d. Lowering blood pressure
Some studies suggest that consuming whey protein can help to lower blood pressure in individuals with hypertension.

e. Reducing inflammation
Whey protein may have anti-inflammatory properties, which can help to reduce inflammation in the body and reduce the risk of certain diseases.

f. Improving blood sugar control
Some studies suggest that whey protein may help to improve blood sugar control in individuals with type 2 diabetes.

It's important to remember that most of these benefits come from consuming whey protein as part of a healthy and well balanced diet, it is also important to note that not all studies have the same results and more research is needed in some areas.
 

b. Three Types of Whey Protein

- Whey protein concentrate (WPC)
This is a concentrated protein that keeps more of the nutrients. Most non-isolate proteins are comprised of WPC.

- Whey protein isolate (WPI)
This is similar to WPC but most of the carbohydrates, fat, and fat-soluble vitamins have been removed, so the powder has a higher percentage of protein. Typically, isolate is digested more quickly and, therefore, more agreeable for some. For that reason, most trainers and registered dieticians recommend opting for WPI, though it’s often more expensive.

- Whey protein hydrolysate (WPH)
WPH is considered pre-digested since it breaks down peptides – the building blocks of proteins – to help with quicker absorption. Before you increase your protein intake significantly, check with your doctor since people with certain medical problems, such as calcium deficiencies or low blood pressure, could experience adverse effects from whey protein.



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