can b12 injection be given subcutaneous Methylcobalamin (Vitamin B12) B12 Injections at Home -

however, vegetarianism or veganism is increasingly so

Of these seven groups, the Firmicutes , Proteobacteria , and Verrucomicrobia phyla demonstrated a significant main effect of treatment group on relative abundance after BenjaminiHochberg correction for multiple comparisons, while Bacteroidetes and Actinobacteria demonstrated significant main effects of treatment group on relative abundance before BenjaminiHochberg correction

Because vitamin B12 is water-soluble, any excess is safely excreted through urine, making ongoing treatment safe under proper supervision

R., Liu, W., Xing, F., Fukuda, K

IJMS 20, 867

Heat and light can degrade the vitamin, so a poorly stored vial may be weaker than it should be