Nxgen Organic Grass Fed Beef LiverSource of Vitamin A (Retinol), B12 and Iron Hormone, Pesticide & GMO Free No Fillers Beef liver is natures most nutrient dense superfood, full of more protein, vitamins, and minerals than any other food available. NXGEN beef liver is famous around the world having been sourced from Australian Grass Fed and Grass Finished and Organic Certified Beef Cattle (not dairy cows). We are talking cattle bred to roam for thousands of miles, that graze in the