Proferrin® is an active ingredient composed of bovine lactoferrin, which is a multifunctional glycoprotein from the transferrin family and its function is to transport iron throughout the body and gets its name because it is the main carrier of iron in milk. Proferrin® contributes to several physiological functions, including both immunity, as for the intestinal system. It works by blocking the metabolism of bacterial cells by binding to iron molecules present in the pathogen., preventing its proliferation.