Shiitake is revered throughout Asia both as a food and for its health-promoting benefits. The blending of traditional wisdom and modern science has created Lentinus edodes mycelia extract (LEM™), a potent form of shiitake. Planetary Formulas Full Spectrum Shiitake Mushroom combines LEM with shiitake mycelium biomass and an extract of the mature fruiting body. The result is a special nutrient-rich and highly assimilable form of shiitake that captures a broad range of unique compounds in this valued mushroom.