Mushroom Optimizer^® is a superior blend of 7 mushroom mycelium species grown on organic brown rice. The mushroom mycelia are specifically selected to complement each other by providing a spectrum of polysaccharides to support the immune system, cell function and endurance.*|Mushroom Optimizer^® contains Folagen^®, a biologically-active folate (5-MTHF [5-methyltetrahydrofolate]) along with a spectrum of polysaccharides.*. . A Blend of 7 Mushroom Mycelial Biomass Grown on Organic Brown Rice and Known to Boost Immune Function*