Taking nifedipine extended-release tablets low blood pressure is still high may be the dose of the drug is not enough, can be under the guidance of the doctor to increase the amount or add other different mechanisms of antihypertensive drugs combined treatment. Nifedipine extended-release tablets are commonly used in the clinic of long-acting antihypertensive drugs, belonging to a kind of calcium channel blocker. If the low blood pressure is still high after taking this drug, it is firstly recommended to increase the dosage of the drug, and if the effect of lowering blood pressure is still unsatisfactory, it is recommended to add other antihypertensive drugs with different mechanisms for combination therapy, such as valsartan, irbesartan, hydrochlorothiazide, spironolactone and other drugs. To maintain the stability of blood pressure in hypertensive patients, in addition to taking medication on time, the diet should be low-salt, low-fat, low cholesterol, quit smoking and limit alcohol, regular work and rest, keep a calm mind, and appropriate exercise. Adjustment of medication for hypertensive patients should be made under the guidance of a doctor, and should not stop taking medication, increase or decrease the dosage at will.