Diuretics

Cheap diuretics are looking to be a very good way to treat high blood pressure and prevent heart failure. Diuretics lower blood pressure by ridding the body of extra water through urination. Patients who use calcium-channel blockers or ACE inhibitors were 40% more likely to be hospitalized or die from heart failure than were those taking diuretics. This study by the American Heart Association supports the U.S. government recommendation that patients with high blood pressure be treated with diuretics first before trying ACE-inhibitors or beta blockers.

Here's the link.