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GHK-Cu is a naturally occurring copper complex of the tripeptide glycyl-L-histidyl-L-lysine, originally isolated by Loren Pickart from human plasma in 1973. The compound is one of the most extensively characterized small peptides in published research, with documented effects on collagen synthesis, glycosaminoglycan production, and approximately 4,000 human gene expression changes
Veterinarski Arhiv 78(3):209216 Moudgal N, Raghupathy E, Sarma P (1958) Studies on goitrogenic agents in food: III
doi: 10.2174/092986712803414015
HGH 191AA is sold strictly for laboratory and research purposes and is not approved by the FDA or other regulators for human use
If you have the right building blocks, you can make glutathione
