Semaglutide is a medication used to treat type 2 diabetes. However, during the manufacturing process, impurities may be introduced that can affect the quality and safety of the medication. These impurities need to be carefully monitored and controlled to ensure the highest levels of purity and efficacy in semaglutide. The most common impurities found in semaglutide include degradation products, residual solvents, and other organic and inorganic impurities. Stringent testing and control measures are necessary to ensure the safety and efficacy of the medication.