The combination of these mighty antioxidants also help prevent cholesterol from oxidizing, so NuVigor RX plaque can't form in blood vessels, thus reducing your risk for heart attack or stroke. One of the problems with the natural remedies that have been used historically is that they are often used on their own. However, it is also not uncommon to feel severe depression. You should boil the powder of dry bark in one liter water for half an hour.