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Before approving a new drug, the FDA typically requires companies to conduct a type of study called a randomized controlled trial, in which study participants are allocated by chance to groups that either receive the drug, or are administered a placebo

GHK-Cu Skin Rejuvenation & Repair Peptide GHK-Cu is a copper-based peptide that may help support healthier, more youthful-looking skin

GHK-Cu stimulates fibroblast proliferation and promotes angiogenesis, while its interaction with copper ions is crucial for enzymatic processes involving extracellular matrix maintenance

It means the scientific information needed to fully define its safety profile is incomplete

Huttenlocher PR, De Courten C, Garey LJ, Van, der Loos H