Overview Natural 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. Medicinal ingredients Each Tablet Contains: Vitamin B12 (Methylcobalamin) 5000 mcg Non-medicinal ingredients Lactose, microcrystalline cellulose, croscarmellose sodium, vegetable grade magnesium stearate (lubricant). Advanced Info Vitamin B12 is a water-soluble vitamin that is found primarily in animal-source foods and is especially important for those who are on a strict vegetarian diet. The methylcobalamin form of B12 is superior to the more common form, cyanocobalamin, as it is active immediately in the body after absorption, rather than having to be converted in the body to the active form. Vitamin B12 has a range of uses in the body. It is needed to prevent anemia; it aids folic acid in regulating the formation of red blood cells, and helps in the utilization of iron. This vitamin is also important in energy production and the production of genetic materials DNA and RNA. In the nervous system, its primary role is in the production of neurotransmitters that help with memory and learning, and for brain health to help slow cognitive decline that comes with aging. Methylcobalamin is essential in converting homocysteine into methionine, playing an important role in protein synthesis necessary for cardiovascular function. As such, it is important for the maintenance of a healthy cardiovascular system and the maintenance of good health. Natural Factors B12 Methylcobalamin is the biologically active form of vitamin B12. The quick dissolved sublingual tablets are immediately absorbed into the body by bypassing the digestive system.