Amlodipine, also known as amlodipine benzenesulfonate, is an antihypertensive drug that acts on calcium ions. Amlodipine benzenesulfonate mainly acts on calcium ions, which can inhibit the entry of calcium ions into the blood vessel wall and dilate the arterial blood vessels, which is also the main mechanism of its antihypertensive effect, and can be used for the treatment of hypertension and coronary heart disease. Amlodipine benzenesulfonate is produced by a number of manufacturers in the clinic, and the drugs produced by different manufacturers may have different trade names, but the main ingredient is amlodipine. Amlodipine belongs to the western prescription drugs, hypertension is the main indication, its adverse reactions are facial flushing, palpitations, lower limb edema, constipation, gingival hyperplasia, etc. For the drug ingredients allergy, hypotension patients are prohibited. It is necessary to choose the drug and dosage under the guidance of the physician, and pay attention to strengthening the monitoring of blood pressure level during the medication in order to give accurate dosage.