Amlodipine, as the most representative antihypertensive drug in the CCB class, acts and works mainly by dilating blood vessels. The main effect of amlodipine is to treat hypertension, and it is effective for both primary and secondary hypertension, both mild and moderate hypertension. It has a wide range of indications and can be applied to almost all populations of hypertensive patients. Moreover, the drug’s effect is relatively mild, and once it takes effect, it lasts for a longer period of time. The above is for reference only, please refer to the doctor’s instructions for specific medication and treatment.