ghk-cu and reta Order Research Grade GHK-Cu Peptide | Puratek Peptides

GHK-Cu is the complex formed when the GHK peptide binds with a copper 2+ ion

Mainly in immunity and inflammation, Que acts on leukocytes and targets many intracellular signaling kinases and phosphatases as well as enzymes and membrane proteins (Li et al., 2016)

Some patients notice improved skin texture and hydration within 4-8 weeks

Its strongest practical use case is combination with semaglutide as CagriSema , where the amylin pathway adds to GLP-1 effects and the combined regimen reached 20.4% weight loss in REDEFINE 1

It does not make the research chemical itself illegal to buy for laboratory use, but it signals real caution

Regulatory status and legality 2