griffith wo 1980 determination of glutathione Analysis GSH and GSSG after derivatization with N-ethylmaleimide Glutathione: Master Antioxidant, Reducing Oxidative
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doi: 10.1016/S0140-6736(10)60888-4

In that trial, morning alertness and wellbeing also improved, presumably due to better sleep and perhaps direct effects of serotonin

Khammas, A

R., Lukens, J
