Praziquantel is an anti-parasitic agent used to treat infections caused by tapeworms and other parasites. Praziquantel impurities are undesired chemical entities present in the drug substance or drug product that may affect the quality, safety, or efficacy of the drug. These impurities may arise during the manufacturing process or storage and can be identified and quantified through various analytical techniques to ensure the drug's purity and safety. Regulatory agencies require the control and monitoring of impurities in pharmaceutical products to ensure their safety and efficacy.