What’s the difference between Whey Protein Isolate and Whey Protein Concentrate?

Plastic protein scoop in a pile of protein powderWhat’s the difference between Whey Protein Isolate and Whey Protein Concentrate?

Simply put - whey is a protein that is derived from dairy. In our case, dairy from our grass-fed free-range cows in New Zealand. One of the reasons whey protein is so popular is its ability to increase the production of new protein in your muscles and contains all nine of the essential amino acids. This aids in muscle growth, repair and recovery.

So, what is the difference between isolate and concentrate? Which one is best for you?

It is important to know that both forms of whey come from the same protein, so they provide similar benefits, but they differ slightly in their nutritional value. The biggest difference between the two is how they are produced.


Whey Protein Concentrate (WPC) is probably the most popular form of protein out there. Most concentrates contain 30%-80% protein, ours contains up to 80% so you know you’re getting the best with every serving! In the filtration process, a lot of lactose and fat is removed from the product while keeping the important minerals we need. It has more biologically active compounds, which can benefit your overall health. WPC tends to keep you feeling more full for longer. Most of our customers best enjoy our WPC in smoothies, shakes or their baking!

Pounamu Protein Natural WPC contains up to 80% protein with 24g of protein per serving. Let’s have a look at the numbers:


Whey Protein Isolate (WPI) is a more filtered form of whey protein. The fine filtering produces a very high level of protein per serving. It is higher in protein than WPC, with lower carbohydrates and fats. During the fine filtering process, lactose, fat, and more undesired minerals are removed from our WPI products. With a slightly lower lactose content, WPI may be beneficial to those who are very sensitive to lactose.

Pounamu Protein Natural WPI contains up to 93% protein with 28g of protein per serving. Let’s have a look at the numbers:


Which is best for me?

Both forms of whey protein are beneficial for everyday life and have similar advantages. The major difference is in the nutritional values. Figuring out which form is best for you depends on your goals and lifestyle. If you are limiting your fat and carbohydrate intake, WPI may be the way to go. If you are looking for something that will help you reach your protein goals while continuing to build and maintain muscle mass, WPC is perfect!

Whichever form of whey you go for, they are both produced from dairy protein, which is a complete protein that will help you get to your protein intake goals! Regardless of which you choose, you’ll know that you’re getting great quality and great taste with our protein.