Displaying 21 results of Atenolol Impurities Atenolol is a commonly used beta-blocker medication used to treat high blood pressure and various heart-related conditions. However, during the manufacturing process, impurities may be introduced into the drug. These impurities may have harmful effects on patients, leading to adverse reactions or reduced efficacy. Therefore, it is important to monitor and control the levels of atenolol impurities to ensure the safety and quality of the medication.