Arenus – health and nutrition through science. Arenus's commitment to quality runs deep. Arenus takes immense pride in the products they produce, the research that goes into each formula and their effectiveness. It is because of this that Arenus goes the distance to ensure their products are manufactured safely, the quality is consistent and they work. They are members of the National Animal Supplement Council and, taking it one step further, many Arenus products are either patented or patent-pending. When an Arenus product is purchased, rest assured that the animal is receiving the highest quality products from the most reputable source.