There are no over-the-counter drugs among the commonly used antihypertensive drugs, and the five major types of antihypertensive drugs currently in use in clinical practice are all prescription drugs. Usually different antihypertensive drugs have different indications, and generally hypertensive patients are accompanied by other concomitant diseases, such as coronary heart disease, hyperuricemia, diabetes mellitus and so on. There are some differences in the type, dose and dosage form of antihypertensive drugs used by hypertensive patients with different symptoms. Therefore, antihypertensive drugs usually need to be diagnosed by a professional doctor and purchased through a doctor’s prescription. If you take antihypertensive drugs privately, not only will your blood pressure not be effectively controlled if you don’t take the right medication, but the long-term wrong use of antihypertensive drugs may also lead to electrolyte and endocrine dysfunction in the body, and in serious cases, it may even lead to kidney damage as well as cardiovascular and cerebrovascular diseases. It is recommended that patients do not take medication on their own, and should go to the hospital in a timely manner for relevant examinations to identify the cause of the disease and then use the appropriate medication under the guidance of the doctor.