Dipyridamole refers to calcium channel blockers, which can be used in the treatment of essential hypertension and coronary heart disease. Calcium ion blockers can effectively inhibit the inward flow of extracellular calcium in small arterial smooth muscle cells and dilate small arteries, thereby reducing peripheral vascular resistance and thus lowering blood pressure, so they are commonly used in the treatment of patients with essential hypertension, and are represented by such drugs as felodipine. Some of these drugs can also treat coronary heart disease, which can be used for the treatment of stable angina pectoris, variant angina pectoris and vasospastic angina pectoris, but its mechanism of action is not yet completely clear, and may be related to the reduction of cardiac afterload, the common drugs are amlodipine benzenesulfonate and so on. Amlodipine benzenesulfonate is a common drug, and so on. The process of using diphenhydramine drugs may appear flushing, ankle edema and other adverse reactions, and patients who are allergic to the drug are not allowed to use this drug, so the use of the drug must be carried out under the guidance of a professional physician.