Eating antihypertensive drugs blood pressure suddenly high and low may be physiological factors, may also be antihypertensive drugs taken improperly or other diseases, you should consult a doctor to find out the cause of the disease. 1. Physiological factors: If the patient has emotional excitement or lack of sleep during the medication, it may lead to high and low blood pressure while taking antihypertensive drugs. 2. Improperly taking antihypertensive drugs: If the patient does not follow the doctor’s instructions to take medication or use some short-acting drugs, the phenomenon of eating antihypertensive drugs with high blood pressure fluctuating can occur. 3. Other diseases: if the patient has pheochromocytoma, adrenal adenoma and other endocrine disorders, it may lead to the occurrence of taking antihypertensive drugs blood pressure suddenly high and low. Taking antihypertensive drugs blood pressure suddenly high and low, should be paid attention to, hypertension patients need to pay attention to low-salt diet, and through the oral medication will be blood pressure to achieve a stable, normal state, in order to reduce the heart, brain, kidney organ complications.