New England Journal of Medicine, 375(19), 1834-1844
Glutathione itself neutralizes free radicals, recycles antioxidants, is involved in phase 1 and 2 detoxification, helps transport mercury out of the cells and the brain, regulates cell growth, and is vital to mitochondrial and DNA health
Because IV glutathione peaks rapidly (within 30 to 60 minutes IV) and clears within hours, there is no need to pause NMN or NR on infusion days
Thus, sufficient quantities of glycine may be just as necessary and rate-limiting as cysteine
However, it is important to note that B12 injections should only be given under the supervision of a healthcare professional