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Establishing that individuals carrying loss-of-function MC1R variants have reduced capacity to respond to endogenous -MSH or exogenous MC1R agonists
Injections are administered under the skin once per week
GHK-Cu is endogenously present in human plasma, saliva, and urine, with the tripeptide sequence sitting within larger ECM proteins like SPARC and type I collagen
Its also important to disclose any medications or supplements youre taking to ensure there are no potential interactions
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