Primary research: Anxiety, cognitive enhancement, immune modulation Mechanism: Enhances GABA signaling, increases BDNF expression, modulates enkephalin metabolism Administration: Intranasal for rapid absorption Regulatory status: Returned to Category 1 compounding status in February 2026 For the full research breakdown, see our Selank peptide benefits guide
Additional scientific background can be found in our dedicated Melanotan II research guide
In a smaller retrospective cohort study, Guy et al
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GHK-Cu operates on entirely different pathways stimulating collagen, stem cell activity, and growth factor production, promoting new blood vessel growth, and reducing DHT sensitivity at the follicle level
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