Nutraxin Vitamin B12 1000 mcg is a highly bioavailable, methylcobolamin fast dissolving sublingual tablets. Sublingual tablets dissolve in one minute and suitable for vegetarian and vegan use. Vitamin B12 contributes to normal energy metabolism Vitamin B12 contributes to normal homocysteine metabolism Vitamin B12 contributes to normal red blood cell formation Vitamin B12 contributes to normal immune system function Vitamin B12 contributes to reliving tiredness and exhaustion Vitamin B12 involves in cell division.