Patients with hypertension whose blood pressure is still at 170 mmHg despite taking medication are in a situation where their blood pressure fails to meet the standard and needs to be regulated and adjusted by medication. In addition, if you were previously taking a calcium antagonist, you can increase the dose above the original base dose to bring your blood pressure down to the normal range. Before adjusting the antihypertensive drugs, you must go to the hospital to improve the relevant examination, to clarify the reasons for the high blood pressure does not drop, to choose the right treatment for the original cause, in order to completely reduce blood pressure.