ProMix Nutrition Whey Protein Isolate Powder, 30g Grass Fed Whey Isolate, 6.6g
Promix Whey Protein Isolate Powder vs Whey Protein Concentrate: What’s the difference?. Whey protein is a mixture of proteins that is left over after milk has been curdled and strained. It is typically about 70-80% protein by weight.