Dizziness after taking antihypertensive drugs for the first time is an abnormal phenomenon, which may be related to the side effects of antihypertensive drugs themselves, improper dosage of antihypertensive drugs or improper combination of drugs. 1. Side effects of antihypertensive drugs themselves: If the instructions of antihypertensive drugs have already explained the symptoms of dizziness, then the patient’s dizziness is likely to be caused by the side effects of antihypertensive drugs themselves, and should be replaced under the guidance of the doctor with medicines with fewer side effects, such as nimodipine. 2. Improper use of antihypertensive drug dosage: If the dose of antihypertensive drugs is too large, it may lead to a sudden drop in blood pressure, resulting in insufficient blood supply to the brain, thus causing dizziness, should consult a doctor in a timely manner to adjust the dose of antihypertensive drugs. 3. Improper combination of drugs: When patients use more than 2~3 kinds of antihypertensive drugs, dizziness and other uncomfortable symptoms may occur, and they should consult a doctor in time to change the treatment plan under the guidance of the doctor. There are many other reasons for dizziness after taking antihypertensive drugs, such as blood pressure has not been controlled to the standard, etc.; if there is any discomfort, you should go to a regular hospital immediately, and adjust the dosage of antihypertensive drugs or the type of antihypertensive drugs under the guidance of a professional doctor.