Preparations containing preservatives should not be introduced into the cerebrospinal fluid due to the risk of neurotoxic effects on neural tissue
In an interesting study, Dyer et al
Additionally, in the context of lowered ATP production, which is a hallmark of mitochondrial diseases, it is important to note that NAC, essentially only being a form of cysteine, will require 2 ATP molecules to be converted to glutathione
The GHK-Cu component may give a very slight blue-green tint this is normal (it's a copper complex)
At both doses, blood glutathione levels climbed (17-35% in the high-dose group), oxidative stress biomarkers fell, and natural killer cell cytotoxicity more than doubled at the 1,000mg dose
Serum testosterone levels were measured using a testosterone enzyme-linked immunosorbent assay (ELISA) kit (Cusabio biotech, Houston, TX, USA) following the manufacturers instructions