J Microbiol Immunol Infect (2019) 52:6636
Serious reactions to vitamin B12 are very rare, and most people will never experience them
Not intended for human or animal consumption, therapeutic use, or any form of in-vivo application
Extensive persistent inflammation even when SARS-CoV-2-infected cells are only sporadically present at late stages of COVID-19 (Schurink et al., 2020) could also justify low GSH levels in association with over-abundance of cellular ROS, cellular oxidative damage, increased inflammation and cell death pathways activation seen in inflammaging (Zuo et al., 2019
B12 (Cyanocobalamin) Vitamin B12, essential for DNA synthesis, fatty acid metabolism, and amino acid metabolism
Much of the subsequent work has instead concerned effects some distance from sleep, including opioid withdrawal models, stress and corticotropin responses, and antioxidant activity