Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry In the early 2020s, interest in GLP 1 weight loss drugs exploded, said CNN. Now, a new buzzword is taking over: peptides. Once a niche interest among powerlifters and bodybuilders, the injectable substances Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Attenuation of Response to Repeated Drug Administration: A Proposal for Differentiating Tachyphylaxis and Tolerance The Journal of Pharmacology and Experimental Therapeutics Functional dynamics of G protein coupled receptors reveal new routes for drug discovery Nature Reviews Drug Discovery