Displaying 3 results of Denaverine Impurities Denaverine is a medication used to treat smooth muscle spasms and improve blood flow. However, it may contain impurities that can affect its safety and efficacy. These impurities can be residual solvents, degradation products, or other unrelated substances that are present as contaminants. Therefore, it is important to control and monitor these impurities during the manufacturing process to ensure the quality and safety of the medication.