Patients with high blood pressure whose blood pressure is not well controlled by antihypertensive drugs can visit a specialist in cardiovascular medicine and adjust their medication under the guidance of a specialist. You can increase the dose of the drug, switch to other antihypertensive drugs, or use a combination of antihypertensive drugs with different antihypertensive mechanisms to lower blood pressure. If the blood pressure is not effectively controlled even after using three or more adequate antihypertensive drugs, the causes should be further analyzed. Common reasons include the lack of effective improvement of lifestyle, taking other drugs that interfere with the antihypertensive effect of antihypertensive drugs, the existence of volume overload and the unreasonable combination of antihypertensive drugs, etc. The possibility of secondary hypertension should also be further excluded.