It is the d-d electronic transition of the coordinated Cu(II) ion, the same physical phenomenon that makes copper sulphate solutions blue
BPC 157 is a synthetic, stable pentadecapeptide (sequence: Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro Ala-Asp-Asp-Ala-Gly-Leu-Val) originally derived from a protective protein found in human gastric juice
Separately, GHK-Cu has documented antioxidant and anti-inflammatory activity in the literature, including suppression of certain free-radical species and modulation of inflammatory chemoattraction of macrophages and mast cells
Artichoke (Leaf - Cynara scolymus L.) Extract 5% Cynarin
cagrilintide was engineered to sit in the bloodstream for days at a time, with a half-life on the order of seven days
"Supply Chain Strategies for Peptide Therapeutics: A Guide for Procurement Professionals." Journal of Pharmaceutical Supply Chain Management, 2023, 7(1): 15-29.