B-12 is an essential vitamin for energy production and carbohydrate metabolism. It is required for the formation of red blood cells, which absorb and carry oxygen throughout the body. Nutricashop B-12 is derived from methylcobalamin, which is a higher quality source for B-12 than products containing cyanocobalamin. Each Bottle contains 60 high-potency tablets, and each tablet provides 5000mcg methylcobalamin B-12.