Nitroglycerin is generally not recommended to be taken regularly. Nitroglycerin is a vasodilator to improve blood supply to the myocardium, it has the advantage of fast onset of action, easy to take, often used for angina pectoris, myocardial infarction in the acute stage, but it also has disadvantages, long-term use will appear drug resistance, and even dizziness, tachycardia and other adverse reactions. Nitroglycerin needs to be contained and stored in the correct way, and it is important to pay attention to whether there are uncomfortable symptoms after oral intake. Nitroglycerin should be taken orally in a semi-recumbent position or in a horizontal position in order to prevent falls due to low blood pressure when standing up. Nitroglycerin is usually stored in a black or brown bottle. It is recommended to take this medicine under the supervision of a doctor and not blindly on your own.