Displaying 36 results of Methotrexate Impurities Methotrexate is a widely used anticancer and immunosuppressant drug that can contain impurities during its manufacture or storage. These impurities can include chemical and biological contaminants that are harmful to human health. It is crucial to monitor and control the levels of impurities in methotrexate to ensure its safety and efficacy in clinical use. Regulatory agencies have established limits for certain impurities, and pharmaceutical companies must adhere to these guidelines to produce high-quality methotrexate products.