Why is Proto Whey the smarter choice? The protein molecules, called peptides, in other products are just too large for your body to absorb. The peptides in Proto Whey have been hydrolyzed (reduced) to between 1% and 4% of the size of typical dietary peptides. What's the benefit of 100% High-DH hydrolyzed whey? A more rapid and complete absorption process. Proto Whey delivers all of its protein to the cells of your body that thrive on it, including muscles, immune cells, brain and internal organs. Other products may deliver only a fraction of their protein throughout your body, while Proto Whey delivers all of the protein quickly and easily.