Antihypertensive drugs accidentally taken twice should be closely monitored for changes in blood pressure, lying down and resting, and patients with symptoms such as low blood pressure or dizziness should go to the hospital in a timely manner. Antihypertensive drugs accidentally taken twice may lead to too low a blood pressure level, be careful to strengthen blood pressure monitoring to prevent serious hypotension. Patients are advised to lie down and rest, try not to stand up and move around, and may drink appropriate water to increase blood volume. Excessive oral intake of antihypertensive drugs, if there are symptoms such as dizziness, may be caused by excessive reduction of blood pressure level, to the hospital in a timely manner to prevent the occurrence of serious cerebral blood supply shortage, and may even induce cerebral infarction. Patients with high blood pressure must usually take oral medication as prescribed by the doctor, carefully memorize the dosage of each medication, and avoid overdose to avoid serious complications.