Colostrum Select™ with Tegricel® is an immunoglobulin rich colostrum extract derived from bovine whey. Colostrum, a unique substance found in mammalian breast milk, is designed by nature to help support and nourish the newborn immune system. It is rich in bioactive compounds including lactoferrin, Immunoglobulin G (IgG), growth factors, peptides and amino acids.