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Best Types of Whey: Hydrolyzed Vs. Whey Protein Isolate

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Ever wonder what the best kind of Whey Protein is?Below we look at two popular forms, Hydrolyzed and Whey Protein Isolate, and get to the bottom of which one will help you more.

What Is Whey Protein Isolate?

Whey Protein Isolate is when you take Whey Protein, concentrate it, and then remove almost everything that is not protein.What this does is create a far purer form of protein.The pros of protein isolate are that it is far purer than Whey Protein Concentrate.It is far easier for you to digest as well.At the same time, the process will make the protein isolate far more expensive than the other alternative forms out there, including concentrated and Hydrolyzed Whey Protein.

What Is Hydrolyzed Whey Protein?

Hydrolyzed Whey Protein is a more refined version of Whey Protein Isolate. It has gone through an additional step of filtration and processing.It is important to know that hydrolyzed whey protein goes through a pre-digestion process.The benefit of such a process is that it is in the fastest and most digestible form of whey protein out there.It is absorbed quickly and is the most bioavailable of any of the options you may be considering.At the same time, one major con is that it is by far the most expensive form of Whey Protein out there. For example, the cheapest hydrolyzed protein at Supplement Express is $99.95 for 1.6kg (cost of $62.46 per kg) whereas the cheapest Whey Protein Isolate is $64.95 for 1.25kg (cost of $51.96 per kg).

Hydrolyzed Vs. Whey Protein Isolate

1.Muscle Building

When looking at building muscle and losing fat, both are equal.Research has shown that there is virtually no difference between the two when considering muscle growth.


Go with Hydrolyzed if you have issues with digesting milk. Hydrolyzed Whey Protein will give you a lot of protein, but for a price that is far more than Whey Protein Isolate.If you are broke or cost-conscious, then you might consider Whey Protein Isolate or other forms of Whey Protein out there, like the concentrated form or a mixture of both.


Many people struggle to digest Whey Protein.If you are lactose intolerant or otherwise have issues with Whey Protein, then consider getting the Hydrolyzed Whey Protein.While the fancy filtration process typically increases the price some, it will none-the-less decrease the amount of bloating you experience (if it is an issue).

Your Choice

In the end, there is far more research suggesting the benefits of Whey Protein Isolate over Hydrolyzed.Aiding in the digestion and processing of the Whey protein material, Isolate typically comes out with a better track record at a cheaper price.At the same time, hydrolyzed protein is higher in protein content per gram and is faster to digest and absorb by the body, but in studies, this doesn’t appear to significantly affect muscle growth. Ultimately the decision is up to you, if you are cost conscious I would go for the Whey Protein Isolate, alternatively, if you don’t mind spending a bit more money for a slightly better performing protein supplement, then, by all means, buy the Hydrolyzed Whey.