Propranolol Hydrochloride (Asterol) 40mg Tablets are a pack of 100 tablets, each containing 40mg of Propranolol, a beta-blocker medication. Propranolol is commonly prescribed to treat conditions such as high blood pressure (hypertension), angina (chest pain), irregular heart rhythms (arrhythmias), and to prevent migraines. It works by blocking the effects of adrenaline, which helps to lower heart rate, reduce blood pressure, and prevent strain on the heart. This medication should be taken according to a healthcare provider’s instructions to ensure optimal effectiveness.