b12 injections for cats with ibd Giving Your Cat a Vitamin Boost Cobalamin for Cats with Digestive
Description
GHK-Cu tackles TGF-beta1 from two directions: it reduces production of the "stop growing" signal and protects the cells receiving that signal from programmed death

One of the things B12 deficiency does is that it lowers immune responses which means that reactions that you would have had are either less noticeable or disappear - runny nose in colds was something that completely disappeared when I was deficient but came back with a vengeance when I started to recover - may be if your original migraine triggers were food related then they are starting to kick back in

10.1161/01.CIR.101.5.504 21
This is real but subtle
They are not intended for human or animal use, bodily introduction, consumption, administration, therapeutic use, diagnostic use, cosmetic use, dietary supplement use, or any form of clinical application

Switzerland Federal Office of Public Health