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Copper peptides, and specifically GHK-Cu, are one of the more interesting compounds in that marketplace because they are not new, they are not synthetic, and they have a body of research stretching back over fifty years
And if animal meat is not part of your diet, you need vitamin B-12 injections or supplements
Again, the peptide is fine, but you now need fewer units per dose
Ethics declarations Competing Interests The authors declare no competing interests
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