You'll find GHK-Cu as an active ingredient in skin care products like serums and creams for mature or acne-prone skin, as the compound supports elastin and collagen production, which are proteins that are integral to the structure of the skin [1]
"Gastric pentadecapeptide body protection compound BPC 157 and its role in accelerating musculoskeletal soft tissue healing." Cell and Tissue Research
Thus, it is very likely that extracellular polyamine modulation of NMDA receptors reflects Spd/Spm co-neurotransmission, adding an additional layer of coincidence detection onto NMDA-mediated synaptic plasticity
So, is that the end of the story
Regular intake of Hydroxocobalamin Vitamin B12 can control high blood pressure, reduced homocysteine levels and, prevent damage to blood vessels
Adding to doctors worries are concerns about purity and dosing, because users typically buy from websites selling unregulated Chinese product some of which comes from plants that previously produced the deadly opioid fentanyl