Displaying 9 results of Megestrol Impurities Megestrol is a synthetic progestin used in the treatment of breast and endometrial cancers. Megestrol impurities refer to the unwanted substances that may be present in the drug substance or drug product, which can affect the purity, safety, and efficacy of the medicine. It is essential to monitor and control the levels of these impurities throughout the manufacturing process and ensure that they are within acceptable limits as per the regulatory guidelines.