Many of us don’t get enough vitamin D from sunshine and diet alone—but we need this nutrient for healthy bones and a strong immune system. Our high-potency supplement fills in the gaps.Vitamin D helps to regulate the body's calcium balance while facilitating calcium absorption into the bloodstream, promotes a healthy inflammatory response in the cardiovascular system, and encourages healthy endothelial function.7,8 Vitamin D also helps inhibit excess renin levels. Healthy renin levels help maintain healthy blood pressure already within the normal range.