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Lyophilized storage Unreconstituted GHK-CU powder remains stable longest
Without basic safety, efficacy, and pharmacokinetic data, using non-FDA-approved peptides remains a gamble with unknown risks and unknown benefits
This prevents trans-epidermal water loss, giving the skin a dewy, hydrated, and luminous appearance
No formal combination study exists in humans
The concern about kidney load is more commonly associated with peptides that stimulate significant systemic hormone production or with impurities in research-grade sources
Key markers include thyroid antibodies (TPOAb, TgAb), inflammatory markers (hs-CRP, ESR), and a full thyroid panel
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