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Description
Protection from light is also specified because UV radiation can photo-reduce Cu(II) to Cu(I), which has different coordination chemistry and generates reactive oxygen species that degrade the peptide backbone

Runners and returning athletes who skip rehab and rely on the stack alone see slower functional recovery even when pain resolves quickly
On its own, GHK is a powerful antioxidant, says Kaka

Overcoming these challenges requires innovative formulation strategies that protect the peptide and enhance its bioavailability
