The Difference Between Whey Protein Concentrate & Whey Protein Isolate

What is the Difference Between WPC and WPI?

WPI & WPC Product Shot

One of the most commonly asked questions we get at True Protein is, what is the difference between whey protein isolate (WPI 90) and whey protein concentrate (WPC 80) and put simply the key difference is refinement.

Both WPC 80 and WPI 90 begin their journeys from the same raw material, whey in liquid form, derived from the dairy process. Through ultra cold filtration processes the first powder form to be made from this raw material is whey protein concentrate (WPC 80) which typically has about an 80% protein content in natural form and still retains a lactose, vitamin and mineral content.

To get to whey protein isolate (WPI 90) the whey protein concentrate goes through additional refinement processes that strip away lactose and other elements of the concentrate to give a purer protein of around 90% content and much lower fats, carbohydrates and lactose.

Which is the Best Protein Powder for Me?

The 2 protein powders ultimately are very similar in many characteristics and only have subtle differences. See the table here that highlights the main similarities and differences.

So to summarise, both WPC 80 and WPI 90 will both help you achieve your protein goals whether that be lean muscle gains or weight loss/toning, it really comes down to preference and budget. If however you suffer from lactose intolerances we would strongly recommend our WPI 90 range as typically the lactose content is so low it will not cause any adverse reaction.

  WPC 80 WPI 90
Protein Content 80% 90%
Fast Digesting
Affordability $50/kg $60/kg
Lowest in Fats and Carbohydrates
Suitable for Lactose Intolerances

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