The effectiveness of compound X is oftentimes dependent on the presence of compounds Y and Z and so on. Endogenous compounds like glutathione get a lot of commercial attention but they do Methylation cycle hypothesis MEpedia Components of the Glutathione Cycle as Markers of Biological Age: An Approach to Clinical Application in Aging Influence of exogenous ascorbic acid and glutathione priming on mitochondrial structural and functional systems to alleviate aging damage in oat seeds BMC Plant Biology Springer Nature Link Methylglyoxal Detoxification Revisited: Role of Glutathione Transferase in Model Cyanobacterium Synechocystis sp. Strain PCC 6803 mBio