ghk-cu effects Peptide “Is GHK-Cu actually worth it?”
Description
How It Works: A small amount of your blood is drawn
Prospective randomized double-blind study of atlas-based autosegmentation assisted radiation treatment planning in head-and-neck cancer

Elastin fibers are damaged and have limited capacity to regenerate naturally (adult humans produce very little new elastin after puberty under normal conditions)
American Head and Neck Society

It contains a small amount of cyanide which the body must detoxify, is shorter-acting and is not recommended by NICE for clinical use

doi: 10.1016/j.heliyon.2024.e33162