Dipyridamole extended-release tablets are a class of calcium channel blockers, such as nifedipine controlled-release tablets and amlodipine extended-release tablets. Diphenhydramine extended-release tablets belong to the dihydropyridine class of calcium antagonists, and calcium channel blockers are divided into short-acting and long-acting. Long-acting include long half-life drugs such as amlodipine, levamlodipine; fat-soluble mold-controlled drugs, such as lasidipine, lecadipine, etc.; slow-release or controlled-release preparations such as nifedipine controlled-release tablets, felodipine extended-release tablets and so on. Diphenhydramine extended-release tablets are common antihypertensive drugs, and its main mechanism of action is to act on the L-type calcium channels on the vascular smooth muscle, inhibit the transmembrane transport of calcium ions, reduce the concentration of intracellular calcium ions, relax the vascular smooth muscle, vasodilatation, and thus play a role in lowering blood pressure. Its role is characterized by less individual variability in efficacy, antihypertensive efficacy and relatively strong amplitude, the best clinical indications are different, such as hypertension combined with coronary heart disease is recommended to use nifedipine, the specific how to choose to use the medication must be in accordance with the doctor’s instructions. When there is a need for medication, it is recommended to consult a doctor in a timely manner and use antihypertensive drugs under the guidance of the doctor, and not to use medication without authorization.