7 Mushroom Super Blend Grown on Organic Brown Rice Supports Immune Function and Energy Level Dietary Supplement Mushroom Optimizer is a superior blend of 7 mushroom species grown on organic brown rice. The mushrooms 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, biologically active folate 5-MTHF (5-methyltetrahydrofolate) along with a spectrum of polysaccharides.