Displaying 2 results of Pimobendan Impurities Pimobendan is a medication used to treat heart failure and other heart conditions in dogs and cats. However, during its manufacturing process, impurities may be introduced. These impurities are unwanted substances that can affect the safety and efficacy of the medication. It is important for pharmaceutical companies to identify and control these impurities to ensure that the medication is safe and effective for use in animals.