Dydrogesterone is a synthetic hormone used to treat menstrual disorders and infertility. However, during the manufacturing process, impurities may be generated, which can affect the quality and safety of the final product. These impurities can include related substances, residual solvents, and heavy metals, among others. Therefore, it is essential to monitor and control the levels of Dydrogesterone impurities to ensure the purity and efficacy of the drug.