Nevirapine is an antiretroviral drug used in the treatment of HIV/AIDS. However, it may contain impurities that can have adverse effects on patients. These impurities can be formed during the manufacturing process or due to degradation over time. The identification and control of these impurities are crucial to ensure the safety and efficacy of the drug. Analytical techniques such as HPLC and GC-MS are used to detect and quantify these impurities, and strict quality control measures are implemented to minimize their presence in the final product.