Isosorbide nitrate tablets can be taken for slow heartbeat and will not aggravate bradycardia. Isosorbide nitrate tablets belong to the arterial dilatation drugs, the expansion of coronary arteries is more obvious, the main clinical indications are the treatment of angina pectoris. Isosorbide nitrate in the dilation of blood vessels at the same time, there may be a reflex fast heart rate, so patients with a slow heartbeat can take isosorbide nitrate, rarely lead to further aggravation of the symptoms of bradycardia. Adverse reactions of isosorbide nitrate include tachycardia, headache and headache, blood pressure drop, etc. It is contraindicated in patients with allergy to the drug components, severe hypotension, cardiogenic shock, increased intracranial pressure and glaucoma. Isosorbide nitrate coronary heart disease patients take more common, the specific dosage and usage of the drug should follow the doctor’s instructions, master the indications of the drug. If there is any discomfort, consult a doctor in time.