Methyl B12 (methylcobalamin), a co-enzyme form of vitamin B12, is the principal circulating form of B12 in the body and supports the central nervous system. Cyanocobalamin, the form of vitamin B12 most often used in supplements, must be converted to methylcobalamin in a lengthy and sometimes inefficient process. Using high dose (1000 mcg or more) methyl B12 supplements provides adequate amounts of this active form for many systems including: nerve function, red blood cell formation, energy production, brain function and homocysteine metabolism.

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