Alprenolol is a medication that belongs to a class of drugs called beta blockers. It is primarily used to treat hypertension or high blood pressure, angina, and heart rhythm disorders. The drug works by blocking the action of adrenaline on the body's beta receptors, which in turn slows down the heart rate, lowers blood pressure, and reduces strain on the heart. There are no known synonyms for alprenolol, as it is a specific drug with a unique chemical composition. However, there are several other beta blockers that are used to treat the same conditions and have similar effects, including propranolol, atenolol, metoprolol, and bisoprolol.