Methyl B-12 5000 mcg, 120 Lozenges, NOW FoodsNOW Foods Methyl B 12 5000 mcg Lozenges Dietary Supplement. Supports Cognitive Function. With Folic Acid. Vegetarian Vegan. Vitamin B 12 is a water soluble vitamin necessary for the maintenance of a healthy nervous system and for the metabolic utilization of fats and proteins. Vitamin B 12 is also essential for the synthesis of DNA during cell division and therefore is especially important for rapidly multiplying cells, such as blood cells. In