Coriolus Versicolor SAPMushroom extract for optimal health and immune support (based on science) Coriolus Versicolor SAP is a medicinal mushroom extracted with hot water which contributes to the proper functioning of the immune system and constitutes a source of antioxidants. Two of the Coriolus versicolor extracts are PSK and PSP, both of which have been the subject of clinical trials on a variety of cancers, including gastric colorectal cancer, lung cancer, and breast