OSKIA Lactoferrin+ Supplement - Immunity, Microbiome, Skin HealthA natural food supplement combining Lactoferrin (from cow milk) and L Glutamine designed to support the natural immune system, gut microbiome, oral and skin health. What is Lactoferrin? Lactoferrin is a natural, biologically active, iron binding glycoprotein made of a single polypeptide chain of 691 amino acids. It is a key biological protein within the body and found in saliva, our tears, synovial fluid, white blood cells, our sweat and mothers milk