Low blood pressure is diastolic blood pressure, high diastolic blood pressure if in the premise of already diagnosed hypertension, generally need to take diuretics, beta blockers, angiotensin converting enzyme inhibitors, angiotensin II receptor antagonists, calcium antagonists, etc. to lower blood pressure. 1. Diuretics: e.g. hydrochlorothiazide, indapamide, generally recommended to be taken in small doses, with greater side effects and easily lead to low potassium. 2. β-blockers: e.g. atenolol, metoprolol, which can inhibit sympathetic excitation. 3. Angiotensin-converting enzyme inhibitors: e.g. Benadryl, Perindopril, which help to dilate blood vessels and lower blood pressure. 4. Angiotensin II receptor antagonists: for example, chlorosartan and irbesartan, which can activate the body’s RAAD system and thus reduce blood pressure. 5. Calcium antagonists: such as nifedipine, amlodipine, can reduce the extracellular calcium ions into the smooth muscle cells of blood vessels, which can help control blood pressure. High diastolic blood pressure must cooperate with the doctor to take medication to lower blood pressure should not be used arbitrarily on their own, especially those who are allergic to the components of the drug is prohibited, pregnant women, lactating women should be used with caution, the use of medication if there are serious adverse reactions, such as skin rashes, hives, thrombocytopenia, etc., if necessary, you need to stop the medication and consult a doctor.