Q: I have been taking 50 mgs of atenolol for years plus Losartan/hctz.. 100mgs-25mg 1tab daily..I have heart palpitations now. I am very concerned. Do my blood pressure medications cause heart palpitations?
A: The blood pressure medicine losartan (Cozaar) can cause heart palpitations and other forms of an irregular heartbeat. The most common irregular heartbeat is atrial fibrillation. To learn more about this condition go to this page on the National Heart Lung and Blood Institute site.