Calcium channel blockers are drugs used for diseases such as hypertension, coronary heart disease, and arrhythmia. They block calcium ion channels on the membranes of myocardial and vascular smooth muscle cells, inhibit the inward reflux of extracellular calcium ions, and reduce intracellular calcium ion levels to alleviate cardiovascular and other tissue dysfunction. The main function of the heart is to reduce intracellular calcium, weaken myocardial contractility and oxygen consumption, thereby reducing sinus node autonomy and alleviating arrhythmia.
Calcium channel blockers are a very important class of drugs in the treatment of hypertension. After binding with calcium ion channels, tissue calcium ions enter cells, causing vascular relaxation and reducing resistance, helping patients better control blood pressure. Therefore, many hypertensive patients are using calcium channel blockers, especially for elderly patients, which have good antihypertensive effects.
There are many types of calcium channel blockers, such as nifedipine, amlodipine, diltiazem, verapamil, flunarizine, etc. The specific classification and indications may vary. Patients should strictly follow medical advice when using them and avoid using them indiscriminately.