Whether taking antihypertensive drugs to 99/65mmHg is low or not is related to the patient’s baseline blood pressure and age. For young and middle-aged hypertensive patients, patients with mildly elevated blood pressure levels, the blood pressure level falls to 99/65mmHg after taking medication is not low, the blood pressure level is within the normal range, and there is no need to adjust the dosage of antihypertensive medication. For patients with severe hypertension, such as systolic blood pressure over 160mmHg, reaching the standard of Grade 2 or above, the blood pressure level is low if it drops to 99/65mmHg within a short period of time. For elderly hypertensive patients over the age of 65, a drop in blood pressure to 99/65mmHg is also considered low blood pressure. Low blood pressure may lead to insufficient blood supply to the brain and symptoms of dizziness. For hypertensive patients’ blood pressure to reach the standard level, it is necessary to refer to the patient’s age, the basic blood pressure level, and there is a gradual reduction of blood pressure, while avoiding the blood pressure level is too low, so as to avoid the cerebral blood supply insufficiency.