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The bonds that give them their structure and function are fragile in ways that most pharmaceuticals arent, as a 2025 review in Protein & Peptide Letters on therapeutic peptide stability documented: heat and environmental exposure during storage and transit break down amino acid bonds, degrading the compound before it reaches the consumer

AHK-Cu then provides copper ions for lysyl oxidase, the enzyme that permanently stabilizes new collagen through cross-linking

This cascade may possibly lead to the proliferation, survival, migration, and differentiation of endothelial cells, which are posited to be the building blocks of new blood vessels