Glutathione is an antioxidant that's made up of the three amino acids glutamine, glycine, and cysteineall of which are rich in the mineral sulfur. The main functions of glutathione are to fend off Glutamic Acid and Glutamine MedMelon Role of glutamine, as free or dipeptide form, on muscle recovery from resistance training: a review study Nutrire Springer Nature Link How to Use L Glutamine for Immunity and Muscle Performance Clinikally Frontiers Glutamine's double edged sword: fueling tumor growth and offering therapeutic hope