Displaying 1 results of Tolcapone Impurities Tolcapone is a medication used in the treatment of Parkinson's disease. However, the drug may contain impurities that can affect its safety and efficacy. Tolcapone impurities can include related substances, residual solvents, and degradation products. These impurities can lead to adverse effects such as toxicity, reduced efficacy, or allergic reactions. It is important to ensure that tolcapone is free from impurities to ensure patient safety and optimal treatment outcomes.