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ghk-cu tolerance desensitization long-term use efficacy Copper Peptide (GHK-Cu): Clinical Uses, Stability & Compounding Tips Tripeptide–copper complex GHK‐Cu (II) transiently
Description
Likewise, Du et al

It has a complex structure and contains a metallic ion along with cobalt
Its plasma half-life is minutes, yet behavioral effects can persist for days to weeks

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