"Copper-peptide treatment resulted in follicle enlargement comparable to the effect of minoxidil in fuzzy rats." Uno & Kurata, J Invest Dermatol (1993) GHK-Cu is one of the most forgiving compounds in the peptide toolkit: no PCT, no HPTA interaction, no cycle-length ceiling for topical use, and no meaningful bloodwork burden
MCAS, liver function, and a few other possibilities deserve a workup
TIMESOFINDIA.COM Grapefruits contain antioxidants, particularly vitamin C, which is known to help regenerate and recycle glutathione
Studies on hair growth demonstrated GHK-Cu enlarges hair follicles and increases follicle size, leading to commercial applications in hair growth formulations
However, neither the innate nor the adaptive immune response is affected by the DPP-4 inhibitors being used clinically (128), and reassuringly, there is no evidence for any increased risk of infections in the pooled safety analyses (119123) or in the CV safety outcome trials (125127), in line with the view that the catalytic activity of DPP-4 is not necessary for the co-stimulatory role of CD26 in T-cell activation