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About this article Cite this article Shang, R., Sun, Z
This mitochondrial peptide helps regulate insulin sensitivity and endurance
The reasons cited by the FDA included concerns about immunogenicity, peptide impurity characterization challenges, and the lack of adequate safety data from human clinical trials
Cause 5: True Sensitivity to GHK-Cu A small minority of users have genuine sensitivity to GHK-Cu or to copper itself
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