Perfect Desiccated Liver is obtained solely from healthy, grass-fed cows. Perfect Supplements believes that liver is a superfood, but in order for it to be beneficial, the liver must come from happy and healthy cows. The cows who help make Perfect Desiccated Liver graze exclusively on rapidly growing grass that sprouts from rich Argentinean soil. Perfect cows are untouched by hormones and antibiotics, and they never come into contact with chemical fertilizers, pesticides, or any other chemical contaminants. Perfect Desiccated Liver is the healthiest liver supplement for you and your family.