Glycomacropeptide (GMP)

What is it? Glycomacropeptide (GMP) is a protein sub fraction found in some whey protein supplements. Whey proteins are derived from cow's milk and contain many sub fraction proteins and peptides, including GMP. When we talk about whey we are actually referring to a complex protein made up of many smaller protein sub fractions (peptides) such as: Beta#lactoglobulin, alpha#lactalbumin,