Diltiazem Hydrochloride Tablets, generically known as Diltiazem Hydrochloride Tablets, and Betalucil, generically known as Metoprolol Tartrate, are mainly distinguished by different mechanisms of drug action. Clinically, Diltiazem hydrochloride tablets belong to the calcium channel blocker, after taking can reduce the extracellular calcium ions into the vascular smooth muscle cells, reduce the contraction response of resistance vessels. It is mainly used in the treatment of angina pectoris and hypertension caused by coronary artery spasm. Usually the drug may cause swelling, headache, nausea and other discomfort after taking it. The drug is contraindicated in people who are allergic to the components of the drug, people with acute myocardial infarction. Blood pressure, liver and kidney functions need to be monitored during the course of taking the drug, while pregnant and lactating women need to use the drug under the supervision of a doctor. Metoprolol tartrate belongs to the beta receptor antagonist, after taking it can inhibit myocardial contractility and slow down the heart rate, so as to play the role of lowering blood pressure. It is mainly used in the treatment of hypertension, angina pectoris, myocardial infarction, arrhythmia and other diseases. The drug may cause dizziness, headache, vomiting and other discomforts after taking it. It is contraindicated for patients with cardiogenic shock, allergy to the components of the drug, low blood pressure, etc. In the process of taking the drug, liver and kidney functions and blood pressure need to be monitored, while pregnant and lactating women need to use the drug under the guidance of a doctor. Metoprolol tartrate and Diltiazem hydrochloride tablets are both antihypertensive drugs, but the mechanism of action of the drugs is different, and the dosage should be decided by the doctor after a comprehensive assessment of the condition.