The generic name of Hexinxiao is Diltiazem Hydrochloride Tablets, which is useful for myocardial bridging. Diltiazem Hydrochloride Tablet belongs to calcium channel blocker drugs in clinic, which can effectively dilate epicardial and subendocardial coronary arteries, thus relieving spontaneous angina induced coronary artery spasm. Secondly, it can slow down the heart rate, lower blood pressure, reduce myocardial oxygen demand, and relieve chest pain, chest tightness and other discomforts. Myocardial bridge is mainly a congenital disease, manifested as a section of coronary artery traveling within the myocardium. Chest pain and other discomforts occur after physical labor, emotional excitement, and in severe cases, acute coronary syndrome. Myocardial bridging usually requires treatment with a beta receptor organizer such as metoprolol. If the person is contraindicated to the beta receptor organizer, and the combination of coronary artery spasm, you can choose calcium channel blockers for treatment, so Diltiazem Hydrochloride Tablets are useful for myocardial bridge. Diltiazem Hydrochloride Tablets may cause swelling, headache, nausea, weakness and other discomforts after taking them. Usually it is forbidden to use for acute myocardial infarction, pulmonary congestion, first and second degree atrioventricular block without pacemaker. At the same time, pregnant and lactating women need to be cautious. If myocardial bridging lesions occur, it is necessary to take Diltiazem hydrochloride tablets for treatment. It is recommended to consult the cardiovascular department in time, after the doctor comprehensively evaluates the condition, decide the dose of the drug and learn the precautions.