Lglutathione (GSH) is a tripeptide made of three amino acids (glutamate, cysteine and glycine) and is the body's main intracellular antioxidant. It neutralizes harmful oxygenbased molecules, protects proteins and cellular machinery from Higher Strength L Glutathione Ophthalmic Acid Known Ophthalmate Chemically L glutamyl l aminobutyrylglycine Stock Vector (Royalty Free) 550329181 Shutterstock IT'S LANDED! We're the first in the UK to launch L Glutathione in a subcutaneous pen format. L Glutathione is often called the ultimate antioxidant. It's a tripeptide, basically a small molecule made