Best Whey Protein | The Difference Between Impact Whey & Impact Whey Isolate?

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The Best Protein Powder To Choose

Whey protein contains protein, fat, carbs, vitamins and minerals. Due to its strong amino acid content and the ability to be absorbed by the body, it’s ideal for building muscle. It has been shown to promote muscle protein synthesis, support fat burning, improve insulin sensitivity and suppress appetite. It has also been shown to increase the production of glutathione (antioxidant).

Protein powders are available in the form of whey concentrate or whey isolate. Both of these contain protein, however, isolate, which is made of whey concentrate, undergoes further processing to yield a product with a higher protein concentration.

What is whey concentrate?

Whey protein is created when liquid portions of milk are pushed through a refined filter. The material that is then left behind and left to dry forms whey protein concentrate. This form of whey varies on the amount of fat and carbohydrates in the form of lactose.

The variation of protein can range between 30-80% and include numerous protein subfractions. According to evidence, these peptides need to remain in their natural, undenatured form to exert these properties.

What is whey isolate?

While whey concentrate has the protein content of approximately 80%, the content within whey isolate is greater at 90%. This is due to cross-flow microfiltration, which causes the protein to separate from fat and lactose.  a popular choice for those that are on low-fat diets, as it’s lower in fat compared to concentrate.

Whey isolate is also much lower in lactose, which makes it ideal for those with an intolerance. As whey concentrate is further processed and purified into whey protein isolate, the structure becomes degraded and loses some of its biological activity. However, the amino acid structure and sequence doesn’t change when the protein becomes denatured and will not affect the muscle building qualities. All large proteins are broken down during digestion into amino acids therefore whether this happens in the gut or in a manufacturing process it is irrelevant.

The choice of whey that you go for should depend on your goals, budget and allergies. As whey concentrate has a significantly higher amount of lactose, if you’re lactose intolerant, you’d opt for the isolate. However, as there is much more processing to make isolate this makes it more expensive.

Flavour & Gain Control

Comparison: Impact Whey Protein Impact Whey Isolate
Kcal (per 25g) 103 93
Fat (per 25g) 1.9 0.1
Carbs (per 25g) 1.0 0.6
Protein (per 25g) 21 23
Number Flavours Available 51 22


What is whey concentrate?

Whey concentrate is created by pushing liquid portions of milk through a filter. The material left is then dried to form whey concentrate, consisting of around 80% protein.

What is whey isolate?

Whey isolate has a protein content of greater than 90%. It also has lower lactose content than whey concentrate.

What is the difference in fat content between impact whey protein and impact whey isolate?

Per 25g, impact whey protein contains 1.9g of fat, whilst impact whey isolate contains 0.1g.

What is the difference in carbohydrate content between impact whey protein and impact whey isolate?

Per 25g, impact whey protein contains 1g of carbs, whilst impact whey isolate contains 0.6g.

How many calories are there in impact whey protein and impact whey isolate?

Per 25g, impact whey protein contains 103 Kcals, whilst impact whey isolate contains 93 Kcals.

Our articles should be used for informational and educational purposes only and are not intended to be taken as medical advice. If you’re concerned, consult a health professional before taking dietary supplements or introducing any major changes to your diet.



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