Narirutin is a flavonoid compound found in citrus fruits such as oranges, lemons, and grapefruits. However, it is common for Narirutin to contain impurities, which may affect its purity and quality. The impurities in Narirutin could be due to manufacturing processes, storage conditions, or even contamination during transportation. Therefore, it is essential to ensure that Narirutin is of high purity and free from impurities to obtain its maximum benefits.