Lion's ManevsNAC

Lion's Mane contains two classes of bioactive compounds: hericenones (A-H, found in the fruiting body) and erinacines (A-I, found in the mycelium). Both stimulate the synthesis of nerve growth factor (NGF) in astrocytes and neurons — hericenones may act through enhancement of NGF gene expression, while erinacines cross the blood-brain barrier and directly induce NGF. NGF binds to TrkA receptors and is essential for the survival, maintenance, and regeneration of cholinergic neurons, particularly in the hippocampus and basal forebrain. This promotes neurogenesis, dendritic arborization, and remyelination of nerve fibers. Lion's Mane also reduces neuroinflammation through inhibition of NF-κB signaling and suppression of pro-inflammatory cytokine production. It may enhance BDNF expression and support the gut-brain axis.

NAC is deacetylated to cysteine, the rate-limiting substrate for glutathione synthesis via gamma-glutamylcysteine synthetase and glutathione synthetase. Glutathione (GSH) is the primary intracellular antioxidant in neurons, neutralizing reactive oxygen species and maintaining redox balance. NAC also activates the cystine-glutamate antiporter (System Xc-, composed of SLC7A11 and SLC3A2 subunits), which exchanges extracellular cystine for intracellular glutamate in a 1:1 ratio. This non-vesicular mechanism modulates extrasynaptic glutamate levels, reducing NMDA receptor overactivation and excitotoxicity. The glutamate-modulating effect explains NAC's promise in OCD (reducing corticostriatal glutamate hyperactivity), addiction (normalizing nucleus accumbens glutamate after drug exposure), and neurodegenerative conditions involving glutamate dysregulation.