Since 1947 Energy Metabolism Nervous System Support Non-GMO Gluten, Wheat & Dairy Free Suitable for Vegetarians Halal Kosher Parve Dietary Supplement Vitamin B12 is part of a group of essential nutrients known as the B Complex. It supports energy metabolism and promotes a healthy nervous system. Along with Folic Acid and Vitamin B6, it supports heart health by promoting healthy levels of homocysteine already within a normal range. B12 is required for the normal development and regeneration of red bloods cells, which help to deliver oxygen throughout the body.