Displaying 21 results of Ropinirole Impurities Ropinirole is a medication used to treat Parkinson's disease and restless legs syndrome. However, during the manufacturing process, impurities may be generated which can affect the quality and safety of the drug. These impurities can be potentially harmful and need to be identified and controlled within acceptable limits to ensure the safety and efficacy of the medication. Regulatory agencies like the FDA have specific guidelines and limits for these impurities that need to be adhered to by manufacturers.