When your B12 is low, you may crave red meat, eggs, dairy products, and other animal-based foods because these are the richest dietary sources of vitamin B12
Also see: Can any vitamins or minerals help prevent or reduce canker sores or cold sores
B12 Injections are generally well-tolerated with minimal discomfort
Physiology (Bethesda) 2014;29:16876.Google Scholar Sermeus, A, Michiels, C
It may improve the immune function of white blood cells, and interfere with the replication of viruses, and produce effects similar to those of many antioxidants
It forms acyl-carnitine esters with acyl-CoA derivatives, enabling entry into the mitochondrial matrix where -oxidation generates acetyl-CoA and ultimately ATP