Swanson Ultra created especially for you the state-of-the-art B-12 containing supplement, which includes the active form of this important vitamin, namely Methylcobalamin. The traditional vitamin B-12 products contain cyancobalamin, an ingredient which the body transforms into methylcobalamin by activating its entire neuro-nourishing potential. Our formula was created particularly to facilitate the body in assimilating vitamin B-12, which will contribute for the faster and more-efficient improvement of the entire nervous system.