ON Gold Standard Whey vs MyProtein Impact Whey

Our two best-selling protein supplements - but which to choose?

Optimum Nutrition's Gold Standard Whey vs MyProtein Impact Whey Protein


Gold Standard Whey 5lbs (2.27kg) vs Impact Whey Protein 2.5kg

Per tub/bag: €62.99 vs €59.99
Per serving: €0.86 vs €0.60

The Impact Whey Protein works out over 30% cheaper per serving, but there's a lot more to this comparison.

Protein content per serving

Optimum Nutrition Gold Standard Whey: 24g (approx)
MyProtein Impact Whey Protein: 20g (approx)

The Optimum Nutrition version contains 20% more protein per serving.

Price per gram protein:

Optimum Nutrition: 3.6c per gram of protein
MyProtein: 3.0c per gram of protein

MyProtein Impact Whey is over 28% cheaper per gram of protein


Both Gold Standard Whey and Impact Whey are made from high-quality proteins, but each is different.

The main ingredient in Gold Standard Whey is Whey Protein Isolate - a leaner form of whey - as wells as Whey Protein Concentrate and Hydrolysed Whey Protein Isolate.

On the other hand, MyProtein Impact Whey's exclusive source of protein is Whey Protein Concentrate. Both forms of whey offer very similar amounts of protein and amino acids per serving, but the isolate has had the lactose almost completely removed which reduces the calories and carbs. It also reduces the chances of bloating after drinking.


In summary, the comparison is more complicated than it looks.

If you're looking for the best value product (and you are not concerned by a few extra calories and the lactose), we recommend MyProtein Impact Whey.

If you're looking to minimise calorie and carb intake, go for the Optimum Nutrition Gold Standard Whey. If bloating or lactose is a concern, check out our range of isolate proteins, or beef protein.​