Cysteine is oxidized to cystine which is readily transported into mammalian cells as a naturally occurring analog of cysteine 2
That requirement is a safeguard, not an obstacle
J Int Soc Sports Nutr 12, 27 (2015) doi:10.1186/s12970-015-0086-7 Luiking, Y
Why Quality Matters More Than Milligrams In the supplement industry, there is a common marketing tactic of "label chasing"trying to find the product with the highest number of milligrams for the lowest price
For example, a high APOBEC mutation signature has been shown to be associated with poor prognosis in ESCC patients, and inhibiting APOBEC mutagenic activity can potentially increase the efficacy of immunotherapeutic interventions
Here are some key points about glutathione: Functions of Glutathione Antioxidant Defense : Glutathione neutralizes free radicals, which can cause oxidative stress and damage to cells, proteins, and DNA