Quinapril belongs to the class of medications called ACE inhibitors. It is used for the treatment of high blood pressure and congestive heart failure. It works by relaxing blood vessels and by making the heart pump more efficiently. Quinapril may be used in addition to diuretics (water pills) known as thiazide diuretics (e.g., hydrochlorothiazide) when one medication has not been found to control blood pressure satisfactorily.

Treating certain kinds of angina (chest pain).

Treating high blood pressure and decreasing the risk of heart attack, stroke, and death in certain patients.

Treating high blood pressure.

Treating high blood pressure.

Treating high blood pressure, heart failure, or certain diabetic kidney problems.

Treating high blood pressure.

Treating high blood pressure alone or with other medicines.

Treating high blood pressure and treating signs and symptoms of benign prostatic hyperplasia (BPH).

Treating high blood pressure.

Treating certain types of life-threatening irregular heartbeat.

Treating high blood pressure, alone or with other medications.

Treating high blood pressure, heart failure, and other heart problems.

Treating high blood pressure alone or with other medicines.