allergic reaction to ghk cu GHK-CU - Research Peptide GHK-CU injection site reaction :

GHK-Cu supports collagen synthesis , improves elasticity , reduces fine lines , and shifts gene expression toward youthful tissue

Key publications: 'Tripeptide in human serum which prolongs survival of normal liver cells' (1973), 'Growth-modulating plasma tripeptide may function by facilitating copper uptake into cells' (1980, Nature), 'The human tri-peptide GHK and tissue remodeling' (2008), 'GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration' (2015), 'Regenerative and Protective Actions of the GHK-Cu Peptide' (2018)

Some people also feel groggy or flat on melatonin

Figure 1A, B, and C Effect of Dihexa on spatial learning in the water maze