is ghk-cu a naturally occurring human peptide The Tripeptide in Prevention of Oxidative Stress and Degenerative Conditions of Aging: Implications for Cognitive Health GHK-CU - Research Peptide -
Description
For legitimate laboratories, it is generally available under research use only terms

Its activity is studied through copper transport and signaling interactions rather than one receptor

After this initial phase, your provider may recommend maintenance injections every month or every few months, depending on your ongoing needs

The compound is distinguished from BPC-157 by its systemic mechanism of action, while BPC-157 is thought to act locally at injury sites, TB-500 promotes cell migration and differentiation throughout the body by sequestering G-actin monomers and regulating cytoskeletal dynamics

It has both protective and anti-inflammatory effects

If you need a wide range of doses, creating a more dilute solution (using more bac water) might give you the flexibility you need to measure both small and large amounts accurately from the same vial
