how many glutathione tablets should i take Supplement — Reduced L-Glutathione Glutathione Injection: Benefits, Safety, &

[7],[8] Glutathione and Human Pigmentation Melanin in human skin is a polymer of various indole compounds synthesized from L-tyrosine by the RaperMason pathway of melanogenesis [Figure - 2] with tyrosinase being the rate limiting enzyme

The idea is that NAC provides cysteine while glycine provides another building block needed for glutathione production

Am J Resp Cell Mol Biol 29 (6), 771778

[ref] Related article: Glutamate regulation Regulation of synthesis: The amount of the amino acid cysteine in the cell is the limiting factor for glutathione production in a cell

Another study from 2021 found snow mushroom to protect against UVA damage as well