PubMed evidence trail Research sources used to frame this page For GHK-Cu vs NAD+: Which Is Better?, FormBlends checks the page topic against primary trials, systematic reviews, guidelines, and current PubMed-indexed literature where available
Taking them separately gives more flexibility to adjust individual doses, which may matter if your provider needs to fine-tune one component independently
Loren Pickart, who pioneered much of the research, suggested that GHK-Cu levels decrease significantly with age (1), although the exact extent of this decline varies across studies
If you have symptoms, call your doctor for an evaluation
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