Hebeishuang Generic Name Diltiazem Hydrochloride Extended-Release Capsules (Ⅱ) and Bayxin Tong (Generic Name Nifedipine Controlled-Release Tablets) are basically the same, the specific use of medication as prescribed by the doctor. 1. Diltiazem acid extended-release capsules (Ⅱ) are suitable for the treatment of mild and moderate hypertension and angina pectoris. Nifedipine controlled-release tablets are suitable for hypertension, coronary heart disease (including chronic stable angina and exertional angina). 2. Adverse reactions such as swelling, headache, nausea, vertigo, rash and weakness may occur after the administration of Diltiazem Hydrochloride Extended-Release Capsules (II). Common adverse reactions to nifedipine controlled-release tablets include edema, headache, vasodilation, constipation, and sensory discomfort. 3.Contraindications to the use of Diltiazem Hydrochloride Extended-Release Capsules (Ⅱ) include: sick sinus node syndrome or atrioventricular block of degree II to III without a pacemaker, congestive heart failure, heart rate less than 50 beats/min, systolic blood pressure less than 90mmHg, and allergy to the product. Contraindications to the use of nifedipine controlled-release tablets include those who are allergic to the product, pregnant women within 20 weeks of pregnancy, lactating women, those who have an ileostomy after recto-colonic resection, and prohibited from combining with rifampicin. Diltiazem Hydrochloride Extended-Release Capsules (Ⅱ) and Nifedipine Controlled-Release Tablets are calcium antagonists, the former belongs to the non-dihydropyridine class, the latter belongs to the dihydropyridine class, with the same effect, including dilation of coronary arteries, reduce myocardial oxygen consumption, reduce peripheral resistance, prolong the atrioventricular node conduction time and other effects. The specific use of drugs should be under the guidance of a specialist physician, and should not be combined at will.