Raab Vitamin B12 and D3 lozenges contain vegan vitamin B12 (methylcobalamin) and vegan vitamin D3 (cholecalciferol). Vitamin B12 contributes to the normal function of the mind and nervous system. It also contributes to normal energy metabolism and the reduction of tiredness and fatigue. Vitamin D contributes to the maintenance of normal bones and teeth, as well as to the normal function of muscles and the immune system