Glutathione is a small protein made of three amino acids. It is often called the master antioxidant because it helps regenerate other antioxidants like vitamin C and vitamin E. Key Benefits Figure 3 from An Overview of Ascorbic Acid Biochemistry Askorbk Ast Byokmyasina Br Baki Semantic Scholar Healthy Origins L Glutathione (Setria) 250mg "reduced" Healthy Origins Natural Factors Glutathione LipoMicel Matrix, 60 Softgels