This is a practical choice that keeps injection volumes small while fitting within standard vial capacity
This means that if your cat has FIP, his B12 reserves can be depleted rather quickly
doi: 10.1201/CRCEXEPHYSIO 302 JammesYSteinbergJGDelliauxSBrgeonF
GHK-Cu and copper uglies Albeit rare, some people may experience a side effect from using GHK-Cu or other copper peptides known as copper uglies. Though there arent any studies on this phenomenon, some users have anecdotal reports of copper peptide skin care products leading to what looks like accelerated skin aging instead of antiaging
Tzivian, L., Winkler, A., Dlugaj, M., Schikowski, T., Vossoughi, M., Fuks, K., Weinmayr, G., & Hoffmann, B