Displaying 6 results of Valbenazine Impurities Valbenazine is a medication used to treat the symptoms of tardive dyskinesia. However, the drug may contain trace amounts of impurities that can affect its efficacy and safety. These impurities can be formed during the manufacturing process or through degradation of the drug over time. It is essential to monitor and control these impurities to ensure the quality and purity of the medication.