After it enters the human body, NAC is metabolized to cysteine which is then converted in the liver to a compound called glutathione
Thus, it seems that DSIP may indeed play a role in altering physiology in preparation of the body for sleep, as some of it effects occur before neurological and behavioral signs of sleep
Zhang, S., Wang, J., Wang, L., Aliyari, S
A retrospective chart review by Lee et al
MSM, as a source of sulfur, and magnesium are essential for the body's own glutathione production, as are selenium and B vitamins, which are closely linked to glutathione metabolism
Summary of recommendations Best for most people: Codeage Liposomal Glutathione Best budget pick: Life Extension Glutathione Best for liver support: Doctor's Best Glutathione + Milk Thistle Best liquid form: Quicksilver Scientific Glutathione Codeages glutathione shines thanks to ingredient quality and a commitment to safety and transparency