Our shiitake mushrooms comes from China, where the tradition around the Shiitake mushroom was born. We chose a highly dosed organic Shiitake extract (~14:1), so one capsule with 750 mg extract corresponds to 11150 mg of organic Shiitake powder. Moreover, the extract is derived from the fruiting body of the mushroom as this part is characterised by the highest amount of polysaccharides and glycoproteins, bioactive substances with various health benefits. Standardised to 40% polysaccharides and 30% beta-glucans. Use this product as an alternative to shiitake crisps or other low immune system supplements or vitamin immune system Shiitake is one of the most versatile and best-known medicinal mushrooms polysaccharide k. It has been an integral part of traditional Chinese medicine for over 2000 years. The underlying reason is certainly the high number of valuable ingredients, including polysaccharides, vitamins, minerals, and other nutrients. That's why our extract is standardized to 40% polysaccharides and 30% of the polysaccharide beta-glucan, the most important bioactive ingredients of Shiitake.