Shiitake is revered throughout Asia both as a delicious food and for its health-promoting benefits. Planetary Formulas Full Spectrum Shiitake Mushroom combines Lentinus edodes mycelia extract 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 the full range of unique compounds in this valued mushroom.