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Quality Sourcing in Canada The quality of GHK-Cu products varies dramatically between suppliers, making sourcing decisions critical for both safety and effectiveness
Its biological importance has also made it an easy target for exaggerated marketing
True allergic reactions are uncommon but possible
And I think it's so relevant
The FDA's concerns cite peptide manufacturing risks: incompletely characterised active ingredient, peptide fragments, degradation products, and impurities that the immune system may recognise as foreign
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