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But also more unknowns, more potential side effects, and no current legal pathway to access
The table below represents a clinical summary of the two therapies across key categories: Primary mechanism: GHK-Cu acts as a tissue repair signal
Beck B, et al
PubMed 18068698 TB-4 / TB-500 product mislabeling documented bidirectional mislabeling between full-length TB-4 (43 aa) and the TB-500 fragment (residues 1723) in marketed peptide products: Esposito M et al
Spoiler: It wasn't the testoster
[39] Depletion of liver glutathione levels (the site of glutathione storage) may be devastating to health
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