Animal Flex is a joint and ligament formula designed to help support the health of athlete's joints.* Animal Flex has been formulated specifically for strength athletes such as bodybuilders and powerlifters. Each pack consists of several different complexes designed to help support healthy joints, ligaments and tendons.* Animal Flex is complete and best of all, it requires only a single dose per day. For more than twenty years, Universal Nutrition has been a leading supplement manufacturer dedicated to developing breakthrough nutritional products that are excellent in quality and competitive in price. Universal manufactures all if its products in its state of the art product.