I was on B12 injections for 13 years until Covid came along and my Doctor asked for a blood test and because my levels were high he stopped them
It provides cysteine, the rate-limiting amino acid your body uses to make glutathione
Stockwell et al., 2020), synthesizes antioxidant GSH by up-taking cystine and exchanging intracellular glutamate at a molar ratio of 1:1 and then reducing cystine to cysteine (Seibt et al., 2019
Recommended Time & Temperature: Traditional Saunas: Beginners should start at 150F for 510 minutes
Waldner, R., Laschan, C., Lohninger, A., Gessner, M., Tuchler, H., Huemer, M., Spiegel, W., and Karlic, H
Surprisingly, we also identified an essential, non-canonical function of the glutathione synthesis enzyme GCLC under cystine starvation conditions