Beef heart is rich in folate, iron, zinc, and selenium. It is also a great source of vitamins B2, B6, and B12, all three of which are in a group known as B-complex vitamins. B vitamins found in organ meats have a cardioprotective effect, meaning they protect against heart disease. Because organ meats defrost so easily, we can no longer accept any liability for defrost in the organ meats incurred in any shipment.