If the patient’s blood pressure is currently high and then suddenly becomes low after taking antihypertensive drugs, it is time to consider whether the dose of the antihypertensive drug chosen is too strong, while the patient’s blood pressure is actually only slightly high, at this time you can replace the strong antihypertensive drug with a relatively weak drug or reduce the dose. If you are currently taking nifedipine controlled-release tablets, you can switch to levoclopramide, which is relatively less effective and may control your blood pressure just fine. There are some people who may not have true hypertension at all, but have high and low blood pressure, caused by mental regulation problems. Some people may have anxiety or cardiac neurosis, and their blood pressure will be high and low, and they will become hypotensive when they take antihypertensive drugs. For this group of people is not to go to antihypertensive drugs, but to adjust the anxiety and improve the problem of neurosis, blood pressure will become more stable. Some may be the wrong time for the patient to take the medicine, such as the patient’s daily blood pressure is mainly elevated in the morning, and gradually become normal blood pressure in the evening, this time it is recommended that patients take antihypertensive drugs in the morning, rather than in the evening, in the evening to eat may become hypotensive blood pressure.