Displaying 7 results of Fenbendazole Impurities Fenbendazole is a commonly used anthelmintic drug that is used to treat parasitic infections in animals. However, during the manufacturing process of Fenbendazole, impurities may be introduced into the final product. These impurities can be harmful to the animal's health if consumed in large quantities. Therefore, it is important to monitor and control the levels of Fenbendazole impurities in the final product to ensure the safety and efficacy of the drug.