The side effects of blood pressure medications on the body are not significant, and the probability of their occurrence is not high enough to cause significant effects on hypertensive patients. Clinically used antihypertensive drugs mainly include diuretics, beta-blockers, calcium channel blockers, and angiotensin-converting enzyme inhibitors. Among them, diuretics may cause hypokalemia, beta-blockers may cause bradycardia and weakness, calcium channel blockers may cause edema and flushing, and angiotensin-converting enzyme inhibitors may cause irritating dry cough and angioedema. However, in general, the probability of these side effects is low, and even if they do occur, they generally do not have a significant impact on the patient. Therefore, patients with hypertension should take antihypertensive drugs for a long period of time to maintain a stable blood pressure and to avoid a greater impact due to fluctuations in blood pressure. If there are obvious side effects can be adjusted to other antihypertensive drugs under the guidance of the doctor to control blood pressure.