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NAD-related metabolites for sirtuin-linked bioenergetics
If you had to pick one: GHK-Cu has broader biological reach (roughly 4,000 genes modulated versus 300-500 for retinol) [3] and a higher responder rate for collagen improvement in the only direct comparison
Eumkeb, G., Siriwong, S., Phitaktim, S., Rojtinnakorn, N
For microdosing, the 2ml reconstitution is clearly superior
At higher doses, it is also absorbed by passive diffusion across the gut wall, independently of intrinsic factor
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