Protein Powder Review: Hydrolysed Whey VS Casein Protein

There are 2 types of whey protein that possess qualities that couldn’t be further apart. Yes, both Hydrolysed Whey and Casein both contain high amounts of protein. However it is in their resistance to the body’s digestion process that really separates the two. If you are interested in finding out the differences between the two and best times to use each, then keep reading below as we will reveal the answers to these questions.

Digestion Speed

Hydrolysed Whey is a type of whey protein that has been semi digested. This type of protein is in the grey area between a protein and an amino acid. This is an important distinction, because when the body digests any type of protein it breaks it down into amino acids, which are then absorbed into the body. The quick the process is, the faster the digestion speed and speed of absorption. As Hydrolysed Whey is semi digested it has a fast digestion and absorption rate. It doesn’t take much energy or time for the body to fully digest Hydrolysed Whey into its individual amino acids.

Whereas Casein is quite the opposite. It is a relatively hard protein for the body to digest and absorb. Casein requires substantially more energy and time then Hydrolysed Whey does, to fully digest or break down to its amino acids. To put it in perspective, Casein Protein can take up to 7 hours to digest, whereas Hydrolysed Whey can take as little as 15 minutes to fully digest.

What Is Hydrolysed Whey Best Suited For:

As it is a fast digesting protein, it is more suited to when the body needs an immediate boost in amino acids / protein. Times like straight before or after a workout help provide the body with an almost immediate source of amino acids. Helping to sustain muscle performance when taken before a workout and when taken after a workout to help with recovery and the development of muscle mass. Hydrolysed Whey is generally more expensive than other types of whey including: Whey Protein Isolate WPI, Whey Protein Concentrate and Casein. You can discover more about Hydrolysed Whey and its pricing on

What Is Casein Protein Best Suited For:

As Casein is a long digesting protein, it is often mixed with other types of protein to provide a steady stream of amino acids throughout the day. It is also often used as a protein supplement just before bed to help supply the body with amino acids while you sleep, fortifying the body’s amino acid resources, furthering the recovery and development of muscle mass.

When To Use Each Type:

Hydrolysed Whey is better when consumed immediately before or after an intense training session. Casein Protein is better when used as a general protein supplement, taken throughout the day or just before bed. You can mix Casein with Hydrolysed Whey and other types of whey (Whey Protein Isolate WPI and Whey Protein Concentrate WPC) to provide a more sustained stream of amino acid absorption that can last up to 7 hours.

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