Immune system support means strengthening the organ system responsible for preventing different kinds of infections. The immune system is composed of white blood cells that produce antibodies that act as the body’s defence against invaders like bacteria, viruses, parasites, toxins, and other microbes that can cause different diseases. There are many natural herbs found in plants all over the world which promote the body's natural immunity and they are now manufactured as immune support supplements. These immune formulas are usually made from Echinacea, Olive Leaf, Garlic, Astragalus and the mushroom formulas to help you achieve a stronger immune system and cope with seasonal changes.