Supports balanced mental and overall health Maintains a feeling of calm while remaining alert Boosts antioxidant activity Sharpen your mental edge naturally with the power of Swanson 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.