From a clinical point of view, it is not a good idea to take nitroglycerin. The symptoms are relieved or disappear after taking nitroglycerin, but the original disease still exists, which may suggest that the disease suffered from coronary heart disease, heart failure, etc. It is recommended to go to the hospital as soon as possible to have a comprehensive examination and treatment. Nitroglycerin has the effect of dilating blood vessels and relaxing vascular smooth muscle. Clinically, it is often used to prevent and quickly relieve unstable angina attacks caused by coronary artery disease and insidious congestive heart failure, etc. Nitroglycerin is also used to prevent and quickly relieve unstable angina attacks caused by coronary artery disease. Therefore, after the emergence of discomfort, taking nitroglycerin can be relieved, mostly suggesting the existence of coronary heart disease, heart failure and other diseases. It should be noted that myocardial infarction early with severe hypotension and tachycardia, glaucoma, severe anemia, increased intracranial pressure, the use of sildenafil citrate patients to be prohibited nitroglycerin, generally in the use of nitroglycerin may occur after dizziness, headache, nausea, vomiting, dizziness, palpitations, flushing, postural hypotension and other adverse reactions. Regular physical examination is recommended, and sufficient attention should be paid to any abnormalities in the body. If there is any discomfort, you should go to the hospital as soon as possible for examination and follow the doctor’s instructions to avoid delaying your condition.