For optimum cardiovascular maintenance, use the most effective form of vitamin B-6 with Swanson Ultra P-5-P (Pyridoxal-5-Phosphate), the metabolically active form of vitamin B-6 that goes to work immediately. In order for vitamin B-6 to be utilised by the body, it must be converted by the liver into its active coenzyme form. P-5-P lets your body side-step this conversion process for more rapid and efficient assimilation.