can humans take animal b12 injections The Benefits of Vitamin Vitamin B12 Injection For Cats:
Description
Some active ingredients may affect how 5-amino-1MQ peptide works, or vice versa

doi: 10.1113/expphysiol.2013.073163 24 BolignanoDCabassiAFiaccadoriEGhigoEPasqualiRPeracinoAet al

Here's what research and user experiences tell us about common side effects

Thats because utilization of vitamin B12 (especially from supplements) depends on levels of other metabolic cofactors and acids