Methylcobalamin is the bioactive form of B12 that is used in the body. Many supplements use a form of B12 called Cyanocobalamin which the body still needs to convert to Methylcobalamin. It’s estimated that 30% of the population do not have the ability to make this conversion - making our Methylcobalamin a much more effective way to get your B12! We source our vegan and non-GMO Methylcobalamin from bacteria instead of animal sources.