Features methylcobalamin, the neurologically active form of B-12 Supports proper red blood cell formation Supports energy production Swanson Ultra brings you a breakthrough in vitamin B-12 supplementation with Methylcobalamin, the neurologically active form of B-12. Traditional B-12 supplements give you cyanocobalamin, a form that the body must convert into methylcobalamin to harness its neuro-nourishing potential. Our Methylcobalamin completes this conversion for you, so your body gets more active B-12 faster, for the health of your entire nervous system.