Hexinxiao is the trade name, generic name of Diltiazem Hydrochloride Tablets, efficacy and action for the treatment of angina pectoris, mild and moderate hypertension and so on. Diltiazem Hydrochloride Tablets are used in the treatment of angina pectoris and mild to moderate hypertension. This product reduces the concentration of intracellular calcium ions by acting on the calcium channels in the coronary vessels, myocardium, smooth muscle of the peripheral blood vessels and atrioventricular node. This product has the ability to dilate coronary and peripheral blood vessels, and can effectively treat hypertension, angina pectoris, and arrhythmia. Adverse reactions to Diltiazem Hydrochloride Tablets commonly include headache, nausea, dizziness, swelling, rash, and weakness. Contraindications are sick sinus node syndrome without a pacemaker, II or III degree atrioventricular block without a pacemaker, acute myocardial infarction or pulmonary congestion. Precautions have the use of this product may occasionally lead to symptomatic hypotension, this product rare occurrence of acute liver damage. The above drugs need to be used under the guidance of a doctor, the specific treatment program, need to be guided by a doctor for better treatment of the disease.