Grade III hypertension is also known as severe hypertension, which ranges from a systolic blood pressure ≥180 mm Hg, and/or a diastolic blood pressure ≥110 mm Hg. Patients with grade III hypertension often require a combination of two, or even more, antihypertensive medications in order to keep their blood pressure within the standard range. Generally for patients with grade 3 hypertension, if you choose antihypertensive drugs, one of them should preferably include diuretics, representative drugs mainly include hydrochlorothiazide. It is recommended to take into account the actual situation of the patient, such as whether there are any other complications or diseases in addition to hypertension. If good control of blood pressure is desired, all these factors should be taken into account in order to keep the blood pressure within the standard range. When the patient’s systolic blood pressure falls below 150mmHg and diastolic blood pressure falls below 90mmHg, it is recommended that the patient can initiate oral antiplatelet and anti-atherosclerotic drugs, such as Bay Aspirin.