Life Extension Methylcobalamin, 1 Mg Lozenges, 60-Count - Methylcobalamin is the form of vitamin B12 active in the central nervous system. It is an active coenzyme of the vitamin B12 analogs, that is essential for cell growth and replication - Neurologically Active Form of Vitamin B12 - This product contains no milk, egg, fish, peanuts, rice, crustacean shellfish (lobster, crab, shrimp), soybeans, tree nuts, wheat, yeast, or gluten. Contains no artificial sweeteners or colors