glutathione reductase activity in vitro Affects Hyphal Growth and Fruiting Body Development by Regulating Intracellular ROS Levels Hypsizygus marmoreus The role of glutathione reductase

While GHK-Cu, a peptide that our bodies make, is used topically in skin cream in an attempt to reduce fine lines, it is not considered safe to inject due the lack of scientific research and the risks of triggering a potentially dangerous immune response

More information can be found on UKADs website here.

BPC157 and TB500 take a different approach they try to actually repair the damaged tissue and reduce the inflammation that causes the pain in the first place

This compound is commonly studied in connection with the enzyme nicotinamide N-methyltransferase (NNMT)

References 1.Marino S., Ciurleo R., Di Lorenzo G., Barresi M., De Salvo S., Giacoppo S., Bramanti A., Lanzafame P., Bramanti P