Displaying 20 results of Labetalol Impurities Labetalol is a beta-blocker medication that is commonly used to treat high blood pressure. However, like most pharmaceuticals, it may contain impurities, which are unwanted substances that can affect the drug's safety and efficacy. These impurities may be formed during the manufacturing process or arise from degradation or contamination. Therefore, it is essential to monitor and control the impurities in Labetalol to ensure its quality and safety.