Doctor’s Best Fully Active B12 provides a vitamin B12 in its most bioactive form as Methylcobalamin for optimum absorption. Vitamin B12 is a key enzyme involved in DNA synthesis, fatty acid and amino acid metabolism in the body. It is essential in the production of red blood cells in the bone marrow and nerve sheath. Vitamin B12 is essential for neurological health, mood and energy.*

Vitamin B12 is essential for humans at every stage of life

Healthy vitamin B12 status is linked to healthy mood and memory management.* This vitamin is required for such fundamental life processes as gene regulation (epigenetics), nerve cell communication, and the management of homocysteine, which may cause endothelial cell damage.

How does it work?

Vitamin B12 is the most chemically complex of all the vitamins. Methylcobalamin is the most active form of vitamin B12. Methylcobalamin is a large molecule with an intricate cage-like structure that encloses a single cobalt atom. Methylcobalamin is used in specific biochemical functions.