buthionine sulfoximine glutathione synthesis inhibitor Markedly Decreased Expression of S-Transferase π Gene in Human Cancer Cell Lines Resistant to Sulfoximine, an of Cellular Glutathione (∗) Preclinical evaluation of azathioprine plus L-Buthionine sulfoximine | CAS 83730-53-4

Glutathione is a small molecule made by your body

And then I found your site

10.1016/j.mri.2019.10.004 Summary Keywords magnetic resonance spectroscopy, glutathione, metalloproteinase (MMP), myeloperoxidase (MPO), psychiatric disorder, posttraumatic stress disorder (PTSD) Citation Watling SE, Rhind SG, Warsh J, Green D, McCluskey T, Tong J, Truong P, Chavez S, Richardson JD, Kish SJ and Boileau I (2023) Exploring brain glutathione and peripheral blood markers in posttraumatic stress disorder: a combined [1H]MRS and peripheral blood study

For a good evaluation, it is essential to follow this rule: DO NOT TRY TO REMEMBER WHAT YOUR SYMPTOMS WERE SIX MONTHS AGO, OR EVEN LONGER