Nitazoxanide is an antiparasitic drug used to treat infections caused by protozoa and helminths. As with any drug, there may be impurities present in the chemical structure of nitazoxanide. These impurities may affect the safety and efficacy of the drug. Therefore, it is important to identify and quantify these impurities in order to ensure the quality and purity of the drug. Various analytical techniques are used to detect and quantify nitazoxanide impurities, including high performance liquid chromatography (HPLC) and gas chromatography (GC).