GHK+BPC+TB+KPV is a mixture composed of multiple peptide substances, which have certain effects in tissue repair, anti-inflammation, etc. The following is a detailed introduction: GHK-Cu (Glycyl-L-histidyl-L-lysine copper): It is a naturally occurring tripeptide with a chemical formula of C14H24N6O4Cu, a molecular weight of 403.92g/mol, and a CAS number of 89030-95-5. It can affect the expression of genes related to tissue repair, promote the production of collagen, angiogenesis, and DNA repair, and has certain effects in improving skin elasticity and promoting wound healing. BPC-157 (Body Protection Compound-157): It is a partial sequence of the body protection compound found in gastric juice, with a chemical formula of C62H98N16O22, a molecular weight of 1419.53552g/mol, and a CAS number of 137525-51-0. It can interact with growth factors and nitric oxide pathways, support angiogenesis, tendon healing, and intestinal barrier function, and help promote the repair of tissues such as muscles, tendons, and intestines. TB-500 (Thymosin β-4 fragment): It is a synthetic fragment of the protein thymosin β-4, which exists in almost all human cells. Its chemical formula is C212H322N56O61, with a molecular weight of 4963.49g/mol and a CAS number of 77591-33-4. It can promote actin binding, up-regulate genes related to healing, enhance cell migration and regeneration, and has a positive effect on the repair of tissues such as muscles and tendons. KPV (α-MSH fragment): It is a tripeptide composed of lysine, proline, and valine, with a chemical formula of C25H38N6O6, a molecular weight of 518.61g/mol, and a CAS number of 66791-71-7. It has strong anti-inflammatory and immunomodulatory effects, especially in the intestinal and epithelial tissues, and can inhibit the activity of inflammation-related factors such as nuclear factor κB (NF-κB).