Don't Waste Your Money is supported by our readers. When you purchase an item through links on our site, we may earn an affiliate commission.

The Best Whey Protein Isolate Powder

Last updated on March 8, 2024

Our Review Process

Don't Waste Your Money is focused on helping you make the best purchasing decision. Our team of experts spends hundreds of hours analyzing, testing, and researching products so you don't have to. Learn more.

Look for the DWYM seal for products that are the best in a category.

Our Picks For The Top Whey Protein Isolate Powders

View All Recommendations
Product Overview
Key Takeaway
 Also Great

NOW Sports Soy-Free Whey Protein Isolate Powder, Unflavored

Don't Waste Your Money Seal of Approval

NOW Sports

Soy-Free Whey Protein Isolate Powder, Unflavored

Adding BCAAs to boost the already nutritionally-robust whey protein isolate powder was a good move in our books. This protein isolate will help you meet your protein goals while keeping the calories low and the nutrients high.

Overall Take

With BCAAsThis whey protein isolate powder is full of great nutrition, it's low in calories and the unflavored powder has limitless uses.

 Best Seller

Nutricost Gluten-Free Whey Protein Isolate Powder, Milk Chocolate


Gluten-Free Whey Protein Isolate Powder, Milk Chocolate

Make your protein shakes taste just the way you like them with this whey protein isolate powder, as there are great flavors like milk chocolate, salted caramel, strawberry and more. You get a well-rounded whey isolate in a large supply.

Overall Take

Good Flavor and ValueThis whey protein isolate powder is a low-carb, high-protein product with a lot of flavors.

 We Also Like

Dymatize ISO100 Scientifically Proven Whey Protein Isolate Powder, Chocolate Peanut Butter


Scientifically Proven Whey Protein Isolate Powder, Chocolate Peanut Butter

We like how this whey protein isolate powder was designed with digestion in mind. It is packed with good things like BCAAs and it goes down smoothly while tasting great.

Overall Take

Easy DigestingThis whey protein isolate powder is loaded with nutrition and BCAA's and it's designed to digest easily.

  The Best Value

Animal Fast Absorbing Whey Protein Isolate Powder, Vanilla


Fast Absorbing Whey Protein Isolate Powder, Vanilla

Each serving of this whey protein isolate powder provides 25 grams of protein and you get 55 servings per container! The formula is easy to digest and comes in a delicious vanilla flavor. Since there's just 1 gram of sugar per serving, the powder is also idea for diabetics and individuals following a keto diet.

Overall Take

Variety of FlavorsIn addition to vanilla, this whey protein isolate powder comes in a choice of six flavors, including cookies and cream and chocolate fudge.

Buying Guide

Eating enough protein during the day can be tough for those who are looking to ensure their muscles have the fuel they need for growth and recovery. Whey protein isolate powders are made to fill this need, as they are designed to be a high dose of protein with relatively low calories so they can be added to a normal diet easily.

Simplemost Media

Whey protein isolate is one of three types of whey that can be produced from the byproduct of making cheese. The other two types of whey are whey concentrate and whey hydrolysate. The primary difference is that whey protein isolate is the purest form of protein from the selection and therefore can be produced to have very little calories, fat and carbohydrates, with some even being lactose or cholesterol-free.

Simplemost Media

Whey protein isolate powder comes in many flavors and varying levels of carbohydrates and micronutrients, which can make your search for the right one a tedious and, at times, a daunting exercise that will have your head spinning.

Simplemost Media

The first thing you should do in this search for protein is set a defined goal for what it is you want to achieve by adding this protein supplement to your diet. If you’re beginning your journey towards exercising and increasing your muscle tone or definition, it’s important to understand your recommended daily calories, as well as how much protein you need to eat.

Simplemost Media

There are calculators online that can help you figure these numbers out. Find one that lets you input your body weight, age, height and the level of activity you have in your daily life. The output of these calculators will give you a great idea of what your lean body mass is and how much protein you need to consume every day to maintain that. Similarly, it will tell you how many calories your body burns during the day, which is the number of calories you would eat in order to maintain your current body weight.

There are whey protein isolates that have no net carbohydrates, which can be ideal for those attempting a ketogenic diet or even just a lower-carb diet. Some whey protein isolates are even packed with vitamins and micronutrients or electrolytes like magnesium and potassium, which can be tough to fit into some of our diets naturally.

Keep an eye on the serving size when you are reading the nutrition facts on any of these packages. It is a heavily debated topic in nutritional science, but it is widely agreed upon that our bodies can only process a certain amount of protein at one time. This means you shouldn’t just drink your entire daily limit of protein in one sitting as a means of getting it out of the way.

Rather, you will want to keep your single-serving sizes of protein in the range of 25-50 grams of protein so that your body can properly process and use it. If you are on the smaller size, mass-wise, you might just want one scoop of protein even if the serving size is recommended as two-scoops. This saves you money in the big picture, but also helps you pace your protein ingestion in a smart way.

It’s hard to know which brand will work well with your tummy, so it is a good idea to try a few different brands and flavors until you find the one that works harmoniously with your body.

On that note, keep an eye out for the various flavor offerings. You’ll often find chocolate, strawberry, banana, vanilla and unflavored powders. These can be mixed with water for simplicity, in which you will mainly get the exact flavor of the powder and not much more. Using protein powder as an ingredient in a smoothie is a really common way to consume it and you can find tons of recipes and information online that will aim you towards a really tasty protein shake.

Once you have defined your daily protein intake and calories, the rest is simply building your diet around these two criteria. If you’re lifting weights as a means of getting more toned while also losing fat, you might be better off with a low-calorie protein powder that will help you stay in the caloric deficit that you will need to lose weight.

What to Look For

  • Protein powder mixed with plain water isn’t for everyone. Don’t be afraid to mix it with things like cream or almond milk to really enhance the experience you have when drinking it.
  • Use your whey protein isolate to make protein-bombs that can be stored in the refrigerator for convenient and healthy snacking.
  • If you use a shaker-bottle to drink protein powders, clean it every time you use it. Protein residue will start stinking quite noticeably when left in a seal-off bottle for a week.
  • Don’t give up on whey protein isolates if they don’t taste good to or if they upset your stomach. Try a new brand instead. Many times there is a whey isolate protein powder that will work well for you, you just need to find it.

More to Explore

The protein supplement industry is bigger than even the beefiest body-builder at your local gym, selling more than $17 billion worth of protein products in 2019. Many people are buying protein products to supplement their diets.

From our partners