B-12 vitamin is one supplements with contents of 125 micg b12. Vitamin b called often ældrevitaminet , when especially older is in deficit with b12. Vegans at risk also to get b12-mangel, which bl.A. Can cause solve teeth.B12 vitamin contribute to normal: formation of red blood cells, cell division, energy metabolism, turnover of homocystin, psychological function, the nervous system normal function, usually immune system. Dispenseringsform tablets