endogenous ghk-cu levels decline with age The potential of GHK as an anti-aging peptide | Dou endogenous ghk-cu levels decline with

While this does not constitute an outright ban, it effectively prohibits its legal use in compounded medications under current FDA regulations

Because injections are thought to be cumbersome, and painful, and expensive

PMID: 22463691 | doi:10.1146/annurev-biochem-052110-115718 Mendias CL et al

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Synthesized peptides have been used in medicine as pharmaceuticals for decades, says endocrinologist Rekha Kumar, MD, associate professor of clinical medicine at Weill Cornell Medicine in New York City

As a research compound, GHK-Cu is investigated in contexts ranging from tissue biology to skin model research and gene regulation studies