NOW&ampreg; Super Colostrum combines Colostrum with the herbal ingredients, Larch Arabinogalactan, Olive Leaf and Astragalus to maximize immune system support. Colostrum has naturally occurring Immunoglobulins IgG, IgM and IgA, which are important immunological proteins for both animals and humans. In addition, NOW has also included Eleuthero to support a healthy stress response.*