Displaying 11 results of Chlorthalidone Impurities Chlorthalidone is a medication used to treat high blood pressure and edema. However, during the manufacturing process, impurities may be introduced that can affect the quality and safety of the medication. These impurities may include residual solvents, degradation products, and other contaminants that can pose a risk to patient health. Therefore, it's important to closely monitor and control the impurities in chlorthalidone to ensure its efficacy and safety.