Pukka Mushroom Gold is based on three edible mushrooms, Maitake, Reishi and Shiitake, and enriched with Nutrigest (Seaweed, Spirulina and Ginger) to help support a healthy ecosystem in the body. Mushrooms have been used for centuries to help support a healthy immune system. Pukka’s formula has guaranteed levels of polysaccharides including beta-1,3/1,6-glucan (the active ingredient) and only the whole fruiting body and mycelium of each mushroom is used. The mushrooms are freeze dried from fresh to ensure all the active ingredients are retained.