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When to choose GHK-Cu GHK-Cu is the better choice for broader regenerative goals
This enzyme catalyzes the N-methylation of nicotinamide using S-adenosyl-L-methionine (SAM) as a methyl donor, effectively creating a "metabolic drain" that depletes both NAD+ precursors and cellular methylation capacity
Consistent quality across multiple orders
NCBI Gene
Properly stored, it remains stable for 30-45 days
But having a low B12 level or a vitamin B12 deficiency can cause physical, neurological and psychological issues
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