IGF-1R Receptor Binding and Downstream Signalling Both IGF-1 and des-(1-3)IGF-1 bind only to the type 1 IGF receptor in L6 myoblasts, rat vascular smooth-muscle cells, and human lung fibroblasts, with binding potencies in the order des-(1-3)IGF-1 greater than IGF-1 a difference attributed to the lower affinity of des-(1-3)IGF-1 for the competing IGFBP rather than superior intrinsic receptor affinity
B.MadhyasthaH.et al (2023)
At least, thats its main purpose in your body
Int Orthop 36(9):19411946 de Mos M, van der Windt AE, Jahr H et al (2008) Can platelet-rich plasma enhance tendon repair
Because of this, most of the products you'll find are intended for external use, or if you do find an oral GHK-Cu pill, it will say it's for "research purposes only." Still, there are a few different formats available on the market today
Timing Baseline Marker Fasting glucose Why it matters Gives a simple snapshot of current glucose control before interpreting appetite or weight changes