L-(+)-Ergothioneine is a naturally occurring sulfur-containing amino acid derivative, biosynthesized primarily by fungi, mycobacteria.Unlike many other antioxidants, ergothioneine is actively transported into cells via the organic cation transporter type 1 (OCTN1), allowing it to accumulate at high concentrations in tissues prone to oxidative stress, including the liver, kidneys, erythrocytes, and ocular lens. Its cytoprotective properties extend to anti-inflammatory, anti-aging, and neuroprotective effects, making it a highly valued ingredient in nutraceuticals.
