Shiitake Mushroom Extract contains fat, carbohydrates, protein, fiber, vitamins and minerals. The mushroom is extracted from the mycelium crushed by the mushroom, which is rich in polysaccharides and lignin. The use of mushrooms in the growth of mushroom tops and stems before the appearance of mycelium, crushing them after manufacturing mushroom products may reduce the infectivity of hepatitis B. Mushrooms can also stimulate white blood cells to produce interferon. It has been shown in laboratory studies that it helps boost immunity.