GHK-Cu is not an FDA-approved drug, and its use is strictly cosmetic in nature
In contrast to the typical amide bond (between the -carboxyl group of one amino acid and the -amino group of another) that links virtually all of the amino acids in naturally occurring peptides and proteins (as well as the cysteine and glycine in glutathione), it is the -carboxyl group of glutamate that is bound to the nitrogen of cysteine (see Figure 1, in which this bond is highlighted by red circles)
Animals were anesthetized by isoflurane inhalation and then euthanized
Li, Y., Zhao, L
Theodore Hersh, a renowned professor of the Emory University School of Medicine who has over 20 patents under his name in the development of glutathione and selenium products, discovered a newer, safer, and more effective way for the body to absorb and use glutathione
I mean, so, [laughs], I'm a huge fan