Nitroglycerin tablets are nitrate vasodilator drugs, with the effect of relaxing the smooth muscle of blood vessels and dilating arterial and venous blood vessels, which are mainly used for the prevention and treatment of angina pectoris in coronary heart disease, and also used for lowering the blood pressure and treating congestive heart failure. Adverse reactions to nitroglycerin tablets include headache, vertigo, weakness, palpitations, postural hypotension, flushing of the face, carcinoma of the drug, and exfoliative dermatitis. Significant hypotensive reactions occur with therapeutic doses and are characterized by nausea, vomiting, weakness, sweating, pallor, and weakness. This drug is contraindicated in the early stage of myocardial infarction, severe anemia, glaucoma, increased intracranial pressure and patients with allergy to nitroglycerin, contraindicated in patients with sildenafil citrate, patients with hypovolemia or low systolic blood pressure should be used with caution, pregnant women and lactating mothers should be used with caution, and the use of drugs in children and elderly patients is not clear. If you need to use nitroglycerin tablets, it is recommended that you consult a professional doctor and follow the doctor’s instructions for standardized treatment, not blindly use the drug on your own.