Diacerein is a medication used in the treatment of osteoarthritis. However, it is important to ensure that the purity of diacerein is maintained for its safe and effective use. Diacerein impurities refer to the unwanted substances that may be present in diacerein, which can affect its quality and safety. These impurities can arise from the manufacturing process, storage, or handling of the drug. Therefore, it is crucial to monitor and control the levels of