glutathione is converted from The transsulfuration pathway: a source of cysteine for in astrocytes | Amino Acids Glutathione Synthase - an overview
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doi: 10.1002/(SICI)1097-4636(199710)37:1 3.0.CO;2-W
iScience 24 , 101902 (2021)

"Healed my shoulder in two weeks!" Meanwhile, professional athletes are secretly using them (until they get caught)
