doi:10.1016/s0196-9781(03)00040-8 Delta Sleep Inducing Peptide (DSIP) is a nonapeptide that was initially isolated from the cerebral venous blood of rabbits and hypothesized to act as a sleep aid
In animal models it repaired cognitive deficits at extraordinarily low doses but no human trials of any kind have been published, and its long-term safety is entirely unknown
, Glycine and N-acetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition: Re, Clin
The glycinate form offers superior absorption compared to oxide or carbonate forms, with bioavailability rates reaching 80-90%