Bio-Vitamin B12 supplements from Pharma Nord delivers vitamin B12 in an advanced, effective and bioavailable form.  Vitamin B12 is an important nutrient that contributes to energy-yielding metabolism, the reduction of tiredness and fatigue and the nervous and immune systems.  B12 is also important to support red blood cell formation and psychological function. For the human body, digesting and absorbing vitamin B12 requires a special protein known as ‘intrinsic factor’ which is produced in the stomach. Some people don’t produce enough of this protein and therefore can’t effectively absorb B12 from their food. This may also be an issue for those of us who take certain medications for high stomach acid, or those that have digestive issues involving low stomach acid.