Swanson Lion's Mane Mushroom is a natural way to support your cognitive function and overall mental well-being. Lion's Mane Mushroom, scientifically known as Hericium erinaceus, is a unique mushroom with a long history of traditional use in Asian cultures for its potential brain-boosting benefits. Sharpen your mental edge with the power of Swanson Full Spectrum Lion's Mane Mushroom. For hundreds of years, the lion's mane mushroom has been treasured throughout China and Japan as a culinary delicacy. Preliminary research has revealed that lion's mane contains constituents known as erinacines, which may promote brain and nerve cell health.