Amlodipine benzenesulfonate is a dihydropyridine calcium antagonist antihypertensive drug that is generally effective in 2 to 3 hours after taking the drug, and the blood concentration reaches a peak in 6 to 12 hours. Amlodipine benzenesulfonate is a dihydropyridine calcium antagonist antihypertensive drugs, oral amlodipine therapeutic dose, generally take 2 ~ 3 hours to take effect, 6 ~ 12 hours after taking the drug blood concentration reaches its peak, the absolute bioavailability of the drug is about 64 ~ 90%, and its bioavailability is not affected by ingested food. Amlodipine indications are mainly for hypertension, the product can be applied alone or in combination with other anti-hypertensive drugs; coronary heart disease, including chronic stable angina pectoris; vasospastic angina pectoris, etc.; the drug’s main adverse reactions are cardiovascular system such as cardiac arrhythmia, gastrointestinal system such as bloating, constipation, etc., neurological system such as dullness of sensation, etc.; the drug is contraindicated in patients who are allergic to amlodipine. The use of specific drugs need to be under the guidance of a professional physician, do not use drugs without authorization to avoid adverse reactions.