Captopril prevents certain enzymes in the body from narrowing blood vessels. This helps to lower blood pressure and makes the heart beat stronger. Thiazides are "water pills" (diuretics) that help reduce blood pressure. This drug is used to treat high blood pressure.

Captopril prevents certain enzymes in the body from narrowing blood vessels. This helps to lower blood pressure and makes the heart beat stronger. Thiazides are "water pills" (diuretics) that help reduce blood pressure. This drug is used to treat high blood pressure.