Beta-blockers such as atenolol (Tenormin), propranolol (Inderal), and metoprolol (Lopressor), frequently prescribed to treat heart disease and high blood pressure, are also used by most patients to ease the heart palpitations and muscle tremors that characterize Graves' disease. But before prescribing beta blockers for this condition, your doctor needs to know if you're asthmatic or have any kind of heart trouble. These drugs aren't a cure. Instead they're given to block some of the effects of thyroid hormones. They are used in combination with other treatments.