Large doses of Vitamin C may moderately reduce blood pressure, Johns Hopkins researchers have found.
But the scientists don't recommend people start taking large amounts of the vitamin.
Researchers led by Dr. Edgar "Pete" R. Miller, an associate professor in the division of general interal medicine at Hopkins, reviewed and analyzed data from 29 previous clinical trials and found that taking 500 milligrams of Vitamin C daily, or five times the recommended amount, could lower blood pressure by 3.84 millimeters.