Fast heart rate but not high blood pressure if no symptoms can not take drugs, some patients can take metoprolol to control the heart rate. People with fast heart rate but not high blood pressure should pay attention to know whether there are related symptoms, if there are no obvious symptoms, do not need special treatment, pay attention to find out the causes of fast heart rate, such as excessive tension and anxiety can also lead to fast heart rate, pay attention to rest, adjust the mood. Some patients may have symptoms of panic attacks and palpitations, which can be treated with oral metoprolol, which can inhibit beta receptors and slow down the heart rate, but care should be taken to avoid low blood pressure. Metoprolol can be used clinically for the treatment of hypertension and tachycardia, and the adverse effects of the drug include hypotension, nausea, dizziness, bradycardia, dyspnea, etc. It is contraindicated in patients who are allergic to the components of the drug, cardiogenic shock, second-degree and third-degree atrioventricular block, bronchial asthma, and hypotension. Heart rate fast blood pressure is not high if the symptoms are obvious, to the hospital in time, under the guidance of the physician to give treatment.