This product contains Methylcobalamin, a hypoallergenic form of Vitamin B-12 that is essential for energy production and plays a crucial role in DNA synthesis and homocysteine metabolism. As the co-enzyme form of B-12, Methylcobalamin is particularly important for maintaining a healthy nervous system. While B-12 is mostly found in animal sources, this vegetarian/vegan supplement from NOW is suitable for strict vegetarians. Please note that natural color variation may occur.