Supports Liver Health. Argentine Beef Liver With Milk Thistle & Eleuthero. Non-GMO. A Dietary Supplement. General Health. Family Owned Since 1968. GMP Quality Assured. NOW® Liver Caps combine the best of high quality Argentine defatted Beef Liver Powder with Eleuthero root (Eleutherococcus senticosus) and Milk Thistle Extract (Silybum marianum) for the support of healthy liver function.* NOW®Beef Liver Powder is free of additives and hormones.