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GHK-Cu activates the TGF-/Smad signaling pathwaythe most potent endogenous stimulator of collagen productionwhile simultaneously enhancing production of connective tissue growth factor (CTGF) and FGF-2 that further amplify collagen expression

For athletes, this uncertainty is critical

The TGA regulates therapeutic goods, while the Australian Health Practitioner Regulation Agency (AHPRA) and the relevant national boards oversee the doctors and pharmacists who prescribe and dispense them

Its a popular choice because the muscle is substantial, and the area typically has fewer nerve endings, which can mean less discomfort during the injection