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B12 has been shown to help improve the nervous system functions
[2] If symptoms are severe or persistent, it's important to discuss them with your healthcare professional
Whether this represents a benefit or a concern is unclear without more research
Foundational GHK-Cu (sister peptide) paper: stimulates collagen synthesis in human fibroblasts, effect beginning at 10^-12 to 10^-11 M and maximal at 10^-9 M the same potency window later reported for AHK-Cu, establishing the copper-tripeptide mechanism
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