Coriolus Versicolor SAP is a hot water-extracted medicinal mushroom that helps support healthy immune function and is a source of antioxidants. Coriolus versicolor is one of the most extensively researched of all the medicinal mushrooms. Two of the extracts within Coriolus versicolor are PSK and PSP, both of which have clinical trials on a variety of cancers including gastric/colorectal, lung, and breast cancers, with favorable results. Coriolus has also demonstrated immune activation on patients with chronic fatigue syndrome with improvements in NK-cell activity.