Take nifedipine controlled release tablets 30 mg, high pressure down too low, low pressure is still high can be replaced with other antihypertensive drug treatment. Nifedipine controlled-release tablets reduce high pressure too low, you can change calcium antagonists in the weaker drugs, such as amlodipine, lasidipine, felodipine and so on. High low pressure is mostly seen in middle-aged and young people with hypertension, especially those who are obese and have too little exercise, so they can strengthen their exercise and control their weight. If the low pressure is greater than 90 mmHg, you can then combine betalactam or timosartan, valsartan to lower blood pressure. If the blood pressure control is not good with a single drug, you can consider the combination of two drugs to lower blood pressure, but be sure to follow the instructions of the local attending physician.