What do cell replication, energy metabolism and DNA production all have in common? Each one of these vital functions relies on adequate levels of B-12 to occur. NOW B-12 1000 mcg with Folic Acid is an ideal way to supply the body with a perfect dose of this crucial nutrient. As an integral part in the lives of active and health conscious individuals, B-12 has gradually become recognized for its coenzymatic properties and important assistance for the production of healthy red blood cells.