The research found that the mucus on the surface of Pleurotus velutipes contains a kind of nucleic acid and polysaccharide, which may have the effect of brain strengthening and intelligence boosting, and may improve brain power. The polysaccharide of Pleurotus velutipes contained in Pleurotus velutipes may also have an anti-tumor effect and may inhibit the growth of tumor cells, and also may have an inhibitory effect on several common bacteria, such as Staphylococcus, Escherichia coli, Mycobacterium tuberculosis, etc. The amino acids, microelements and cellulose contained in the mushroom may also help improve immunity and may promote gastrointestinal peristalsis. It is low in calories and is suitable for people who may wish to lose weight. 30 dys money back guarantee. Returned item must be in original condition and packaging. Buyer pays return shipping. No refunds issued unless item is returned.