The invention relates to a
drug composition. The
drug composition consists of an effective treating amount of
calcium antagonist (CCB), an
angiotensin II receptor blocker (ARB), a thiazide
diuretic, a
folic acid compound and a pharmaceutically acceptable carrier, wherein the content of the CCB is 2-240 mg, the content of the ARB is 4-600 mg, the content of the thiazide
diuretic is 0.625-25 mg, and the content of the
folic acid compound is 0.4-0.4 mg. The
drug composition has the advantages that the drug composition can effectively improve the
treatment effect of reducing
blood pressure of class-2 and class-3 hypertensive patients, strengthen the effect of protecting target organs of the patients and reduce the occurrence risk of cerebral apoplexy complications caused by high
blood pressure. In addition, the drug composition can be conveniently taken by patients, the
treatment compliance is greatly improved, and the medical costs can be also reduced.