Dymatize ISO100 derives its name from its protein source, 100% Whey Protein Isolate. Unless you are in the medical profession, you have probably never seen protein like this before. Most companies claim they use Whey Protein Isolate, but after one serving of Dymatize ISO100 you can instantly see, taste & even feel the difference! Our Whey Protein Isolate has been processed to the zenith of perfection, 100% hydrolyzed & instantized & taken through no less than 5 quality controlled steps. Both lactose & fat have been removed from ISO100, leaving you with nothing but the most easily digested, assimilated & most bio-available source of protein on the market.