Chlorosartan potassium hydrochlorothiazide tablets are a long-acting antihypertensive drug. Chlorosartan Hydrochlorothiazide Tablets is a compound preparation composed of chlorosartan and hydrochlorothiazide, both drugs have longer half-life, long duration of action in vivo, and achieve synergistic antihypertensive effect by blocking vasoconstriction, aldosterone release, and diuresis; therefore, it is a long-acting drug. Chlorosartan belongs to the angiotensin 2 receptor antagonist, by blocking the binding of angiotensin and receptor, blocking vasoconstriction and aldosterone release to achieve antihypertensive effect, and its antihypertensive smooth; Hydrochlorothiazide is one of the five commonly used antihypertensive drugs, belongs to the long-acting diuretics, when the blood pressure is under control can be appropriately reduce the amount of maintenance dose of long-term use of the drug. It should be noted that the clinical should be based on the level of blood pressure, regular use of antihypertensive drugs under the guidance of a physician, and regular monitoring of blood pressure and timely adjustment of medication, patients should also control their weight, low-salt and low-fat diets, and more exercise, to assist in improving blood pressure.