Ergothioneine is a natural substance found in mushrooms that is able to pass the blood brain barrier and contains significant antioxidant and anti-inflammatory properties. " Lion's mane and oyster mushrooms had the highest concentrations of L-ergothioneine." Metabolomics Profiling of White Button, Crimini, Portabella, Lion's Mane, Maitake, Oyster, and Shiitake Mushrooms Using Untargeted Metabolomics and Targeted Amino Acid Analysis - PubMed

Our Lion's Mane is batch-tested for hericenones, and it's exciting to see continued research into the powerful potential of this metabolite. Hericenones From Hericium erinaceus (Bull.) Pers.: A Scoping Review of Structural Diversity and Health Benefits - PubMed

In this systematic review, Lion's Mane Mushroom (hericium erinaceus) was found to be the most promising compared to other mushrooms regarding the potential to help with peripheral nerve injury. Application of Medicinal Mushrooms for the Treatment of Peripheral Nerve Injury: A Systematic Review - PubMed