Heme iron is up to 33% more absorbable in the body than non-heme iron. In fact, non-heme forms can have as low as 2% absorbability. Energizing Iron is a source of nutrients to support the body's need for iron, vitamin B12, and trace minerals. The iron found in this supplement is heme iron - easily absorbed by the body and more gentle on the stomach than other supplemental iron forms. Produced from beef liver obtained from animals raised in Argentina, Energizing Iron contains no chemical sprays, pesticides, or antibiotics from livestock feed. Vitamin B12 - the energy vitamin - helps form red blood cells and maintain the central nervous system.