Vitamin B12 Vegetable Capsules | Biocare (30). Vitamin B12 contributes to normal energy yielding metabolism, homocysteine metabolism and reduction of tiredness and fatigue.. Vitamin B12 contributes to normal energy-yielding metabolism. Vitamin B12 contributes to normal functioning of the nervous system. Vitamin B12 contributes to normal homocysteine metabolism. Vitamin B12 contributes to normal psychological function. Vitamin B12 contributes to normal red blood cell formation. Vitamin B12 contributes to the normal function of the immune system. Vitamin B12 contributes to the reduction of tiredness and fatigue. Vitamin B12 has a role in the process of cell division. This combination can be relevant for vegetarians and vegans. Recommended Intake. One capsule taken daily with food or as professionally directed. Product Information per Daily Intake. INGREDIENT. AMOUNT. PROVIDING. % EC NRV. Vitamin B12. 500mcg. 20000