The FDA has pretty stringent regulations regarding the marketing of supplements. As such, here's the disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Here is a GREAT article about the benefits of Lion's Mane.
Lion's Mane is a mushroom that contains some of the best medicinal compounds of any food on earth.
Named for its flowing "hair," it is also called Bearded Tooth, Satyr's Beard, Pom Pom Blanc, and in Japan Yamabushitake. Its scientific name is Hericium erinaceus.
While Lion's Mane has been used in Asian folk medicine for centuries, it used to be reserved for the rich and powerful because of how uncommon it is in the wild.