Displaying 17 results of Anastrozole Impurities Anastrozole is a medication used to treat breast cancer in women. However, Anastrozole impurities are unwanted substances that may be present in the medication, which can affect the drug's potency or cause adverse reactions in patients. These impurities can be caused by the manufacturing process, storage conditions, or even the raw materials used to make the medication. It is essential to monitor and control the levels of Anastrozole impurities to ensure the safety and efficacy of the medication.