COVID 19 patients have increased oxidative stress, oxidant damage, and glutathione deficiency BCM FDA highlights concerns with using dietary ingredient glutathione to compound sterile injectables FDA Glutathione an overview ScienceDirect Topics JCI Insight COVID 19 infection alters kynurenine and fatty acid metabolism, correlating with IL 6 levels and renal status Oxidative stress is a shared characteristic of ME CFS and Long COVID PNAS Melatonin: a ferroptosis inhibitor with potential therapeutic efficacy for the post COVID 19 trajectory of accelerated brain aging and neurodegeneration Molecular Neurodegeneration Springer Nature Link