Displaying 8 results of Propranolol Impurities Propranolol is a beta-blocker medication used to treat high blood pressure, heart rhythm disorders, and other conditions. However, the manufacturing process of propranolol can lead to the presence of impurities, which are unwanted substances that can affect the safety and efficacy of the medication. These impurities can be harmful to human health, and therefore, it is important to monitor and control their presence in propranolol products. Regulatory authorities have established limits on the levels of propranolol impurities to ensure the quality and safety of the medication.