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Skin Care Success Stories Injectable GHK-Cu: The Approval Gap and the Safety Questions Unlike FDA-approved insulin and GLP-1 medications, many injectable peptides that are touted as longevity and health cure-alls are neither FDA approved nor regulated, with their safety and efficacy unproven and some even risky

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It is believed to improve blood flow to the brain, enhance neurotransmitter function, and provide antioxidant protection

These compounds are heavily promoted but the human evidence is not in yet More than a dozen compounds dominate the longevity and biohacking conversation

Metabolism 1990;39:34956.ArticlePubMed 26