B Vitamins have many uses including contributing to the release of energy from foods, supporting the healthy function of the nervous system, contributing to the reduction of tiredness and fatigue and supporting normal psychological function. Vitamins B6 and B12 are presented in their biologically active forms. Vacuum packed to reduce oxidation of the B vitamins. Vitamins B6, B2, B12, C and biotin contribute to normal functioning of the nervous system. Vitamin B1, B3, B6 and B12 contribute to normal psychological function. Vitamin B1, B2, B3, B5 and B6 contribute to normal energy-yielding metabolism. Vitamin B2, B3, B5, B6 and B12 contributes to the reduction of tiredness and fatigue. Vitamin B6, B12 and folic acid contribute to the normal function of the immune system.