B12 Methylcobalamin 90 sublingual tabletsNatural Factors B12 Methylcobalamin is the biologically active form of vitamin B12, the form most readily absorbed into the body. It is a water soluble vitamin that is necessary for various bodily processes, including energy production, nervous system function, and production of genetic materials DNA and RNA. Supports the nervous system Helps memory and learning Boosts energy Helps control homocysteine levels Promotes a healthy cardiovascular system