This medication relaxes and expands blood vessels and is used to treat high blood pressure (hypertension).

This medication relaxes and dilates (expands) blood vessels resulting in lowered blood pressure. It is used to treat hypertension (high blood pressure).

Hydralazine helps to widen arteries and veins so blood flows better. Hydrochlorothiazide (HCTZ) is a "water pill" (diuretic) that rids the body of excess fluid. This combination medication is used to treat high blood pressure (hypertension).