Life Extension Potassium With Extend Release Magnesium 60 Vegetarian CapsulesAlready Healthy Blood Pressure Magnesium and potassium both help maintain healthy blood pressure already within normal range. But most of us dont get enough magnesium in our diets. The same goes for potassium. So weve combined our immediate and extended release magnesium with a healthy dose of potassium. Blood Circulation Magnesium helps relax the smooth muscles in your blood vessels and supports blood vessel function. It also helps inhibit