Generally, primary hypertension is not curable and requires lifelong medication. The dose of medication can be adjusted according to the patient’s blood pressure and the severity of hypertension. Discontinuation of the medication usually causes a rebound in blood pressure, which is usually related to the severity of the patient’s original hypertension and also to the type of medication. In the past, antihypertensive drugs were used short-acting antihypertensive drugs, but now it is common to use long half-life, 1 day only once, or 2 times the long-acting antihypertensive drugs, which have a longer half-life. If you take the medication regularly, it has worked, and occasionally stop the medication for a day, the blood pressure will not produce a large deviation, the third day to make up for it.