Displaying 11 results of Flupirtine Impurities Flupirtine is a non-opioid, centrally acting analgesic medication used primarily for pain management. However, the drug may contain impurities that can impact its efficacy, safety, and stability. These impurities may originate from the manufacturing process or storage conditions, and can include degradation products, residual solvents, and other impurities. It is essential to monitor and control these impurities to ensure the quality and safety of flupirtine.