PMID 30863034
Symptoms of a B12 deficiency include: Excessive fatigue Nerve problems (pain or abnormal sensations like numbness or tingling) Glossitis (tongue inflammation) Low numbers of white blood cells and red blood cells Vitamin B12 deficiency can be diagnosed with a blood test
Rotate Injection Sites : Keep track of the injection sites and rotate them with each dose to avoid lipodystrophy (changes in the fat tissue under the skin) and other complications
(PDF) Costi, S., Morris, L.S., Collins, A., Fernandez, N.F., Patel, M., Xie, H., Kim-Schulze, S., Stern, E.R., Collins, K.A., Cathomas, F., Parides, M.K., Whitton, A.E., Pizzagalli, D.A., Merad, M., Russo, S.J., Murrough, J.W
This should be individualised based on your needs and medical conditionsparticularly if you have kidney disease, where protein intake may need restriction