is topical ghk cu fda approved ghk-cu injection I hear it all the time — “GHK-Cu isn't 🚨 Parents & teen athletes:

NAD+ and Glutathione perform different functions in the body

Shippenburg T, Bals-Kubik R

The copper in GHK-Cu can sometimes cause slightly more reaction than other peptides

Pickart & Margolina (2018) Biomolecules : Review documenting GHK-Cu's regenerative and protective actions across skin, wound healing, lungs, and nervous system

That comparison is interesting, but retinoids have their own large evidence base and regulatory categories that differ from copper peptide products

10.1016/j.jpainsymman.2015.12.340 [DOI] [PubMed] [Google Scholar] 4.Ruggiero E, Tizianel I, Caccese M, Lombardi G, Pambuku A, Zagonel V, et al