Diltiazem Hydrochloride Extended-Release Capsules are calcium channel blockers used in the treatment of hypertension and other diseases, and should be used in accordance with medical advice. Diltiazem Hydrochloride Extended-Release Capsules can dilate coronary arteries and relieve angina pectoris, as well as reduce peripheral vascular resistance and lower blood pressure. It is used in the treatment of hypertension and angina pectoris of coronary heart disease. Adverse reactions of Diltiazem Hydrochloride Extended-Release Capsules include swelling, dizziness, headache, nausea, rash, weakness, angina pectoris, arrhythmia, anorexia, constipation, diarrhea, hypersomnia, amnesia, depression and so on. This product is contraindicated in sick sinus node syndrome without pacemaker, II or III degree atrioventricular block, systolic blood pressure lower than 90mmHg, people who are allergic to this product, acute myocardial infarction, pulmonary congestion. It should be used rationally under the guidance of a doctor.