Fast becoming regarded as the ultimate whey protein blend new mutant whey is a unique 5 stage whey protein that triggers noticeable muscle growth and increases nitrogen retention yes whey protein helps you grow but mutant whey helps you grow bigger and faster new mutant whey has been developed after 28 months of dedicated research it is the worlds first protein to use specially selected proteins each with their own unique uptake rate this 5 stage whey protein allows each source its own un