with a placebo over a ten-week treatment period.
Nitrites are found naturally in green leafy vegetables. Researchers believe that once in the blood, they are converted to nitric oxide.
In a new trial at the University of Pittsburgh, inhaled nitrites are being used to treat pulmonary arterial hypertension, or high blood pressure in the pulmonary artery.
Thirty patients with the condition will be given different dosages and their blood pressure monitored.