Consuming beef organs is important for several reasons. It’s packed with Vitamins A & B, along with minerals. Beef spleen is the richest source of iron. Beef liver is filled with vitamin A & B, high in vitamin B12, iron, and copper. Beef kidney is rich in selenium, vitamin A, vitamins B2, B3, B5, B6, B9, B12, phosphorus, zinc, iron and copper. Beef pancreas is a natural source of enzymes (digestive enzymes) amylase, lipase, and protease. Beef heart is the richest source of coenzyme Q10 (CoQ10), vitamins B2, B6, and B12. Codeage Beef Organs contains 100% pure grass-fed bovine organs. Beef organs provide an abundant amount of micronutrients including selenium, Vitamin A, B2, B3, B5, B6, B9, B12, phosphorus zinc, iron, CoQ10, copper and more. 2.