NAD is commonly supported through precursors like NMN or NR
Source: Reduced Expression of MYC Increases Longevity and Enhances Healthspan (2015) Claim 4: GHK-Cu improves cognitive decline and modulates neuroinflammation
What Is Glutathione, Really
In contrast, Ghrelin treatment activated the BMP6/SMAD1 signaling pathway, which upregulated the expression of SLC7A11, GPX4, FTL1, and FTH1
A recent meta-analysis investigating the role of glutathione in Parkinsons disease found that whilst it did not improve mood and the ability to perform daily activities, it did slightly improve motor function compared to individuals on the placebo (3)
In the case that you are overmethylating, yet are still deficient in folate and B12, you may want to avoid methylated versions of folate (methylfolate) and B12 (methylcobalamin), and consider non-methylated but active versions of folate (folinic acid) and B12 (adenosylcobalamin and/or hydroxocobalamin)