Nature's lab ® mushroom 7 - with seven species of mushrooms supports immune system health nature's lab gold mushroom 7 is a superior blend of seven mushroom species grown organically. The mushrooms are specifically selected to complement each other in ing immune system health. Nature's lab gold mushroom 7 includes reishi, himematsutake, maitake, lion's mane, shiitake, fu ling, and turkey tail mushrooms. . Nature's lab mushroom 7 - 90 vegetarian capsules (45 servings)