The Agaricus Blazei Murill (more commonly known as Brazilian mushrooms) contains the highest level of Beta-Glucans. Beta-Glucans stimulate various aspects of the immune system by the increasing activity levels of immune cells such as macrophages and T-cells that are first to fight bad bacteria and viruses. Lifestream ABM Immuno Advance contains an extracts that has 10 times the usual concentration of the Agaricus Blazei Murill, with other medicinal mushroom extracts for potent immunity protection.