Figure 1 from Glutamine metabolism and function in relation to proline synthesis and the safety of glutamine and proline supplementation. Semantic Scholar Glutathione, often dubbed the master antioxidant plays a crucial role in detoxification, immune function, and protecting our cells from oxidative stress. Here are some signs that your levels might be low: Persistent Glutathione VS L Glutamine: Supplement Brands Need To Know Role of Glutamine in Cancer: Therapeutic and Imaging Implications Journal of Nuclear Medicine