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GHK-Cu has excellent skin penetration compared to larger molecules, and its copper component helps stabilize the peptide during absorption into the dermis
Together, these observations have guided the design and development of FGF21 analogs that may restore metabolic homeostasis
A light breakfast 30 to 60 minutes before or after injection can buffer this effect, but that requires planning your morning around the shot rather than the other way around
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Duan X, Wang N, Peng D
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