A 2009 study showed the peptide could improve functional recovery following sciatic nerve transection in rats, suggesting applications for nerve injury recovery
That means some supplement products may not contain what the label says

Ingredients Water, Niacinamide, Sunflower Seed Oil, Glutathione (600mg), Peppermint Leaf Extract, Sulfate Primrose Extract, Yarrow Extract, Mallow Extract, Lemon Chestnut Extract, Speedwell Extract, Skyweed Root Extract, Indian Gooseberry Fruit Extract, Mulberry Bark Extract, Virginia Prunus Leaf Extract, Sodium Hyaluronate, Glyceryl Arachidonate, Glyceryl Linolinate, Panthenol, Tocopheryl Acetate, Sodium Ascorbyl Phosphate, Pyridoxine, Polyacid, Thiamine HCl, Cyanocobalamin, Biotin, Retinyl Palmitate, Acetylhexapeptide-8, Copper Tripeptide-1, Oligopeptide-29, Oligopeptide-32, Palmitoylpentapeptide-4, Cetearyl Olivate, Polyacrylamide, Sorbitan Oleate, 1-2-Hexanediol, Pasqueflower Extract, Cinnabar Fruit Extract, Russian Extract, C13-14 Isoparaffin, Fee, Carbomer, Triethanolamine, Glycerol, Laureth-7, Butylene Glycol, Ethylhexylglycerin, Hydrogenated Lecithin, Polyglyceryl-10 Stearate The manufacturer is responsible for the products ingredients
Song, C
Uses Clinically Researched Glutathione Forms A high-quality brand will use forms aligned with human studies, such as: L-Glutathione S-Acetyl Glutathione Liposomal Glutathione Free Form Glutathione These forms support: antioxidant activity melanin balance skin clarity cellular protection Ishin Premium is built on these science-backed forms never on hype-driven ingredients
& McLean, W