For most of human history, we have consumed the whole animal – nose-to-tail. Grass-fed liver delivered the most nutrient-dense food of our forgotten diets. It nourished our native ancestor's brains, immune systems, and bodies. Traditionally, we fed a healthy animal heart to a person with a weakened heart. We saved the freshly harvested liver for the most valued members of the tribe: child-bearing women and children. Their brains and immune systems flourished when they ate the prized organ. When we abandoned this part of the animal, we became malnourished with an epidemic of declining health. Honor your body by putting back what the modern world leaves out. Our premium liver rejuvenates wilted modern-day humans using grass-fed, pasture-raised, fully inspected cows without hormones or antibiotics. We freeze-dried pristine beef liver into capsules and preserved the heat-sensitive nutrients to nourish your brain for peak performance. Dr. Boz Grass-Fed Beef Liver revives you using nature's most concentrated source of Vitamin A and the most absorbable form of iron–heme iron. Our grass-fed liver provides sustenance that only whole foods can deliver energizing metabolic health with the critical nutrients of Copper, Zinc, Folate, Hyaluronic Acid, and B-complex vitamins.