Optimum strength vitamin d3 for health wellnessr vitamin d plays a truly remarkable role in the body and is essential for all round good health it is not only vital for strong bones but is now known for its role in helping to maintain healthy hormone metabolism heart health blood pressure regulation and immune systemr vitamin d ndash the lsquowonder vitaminrsquor vitamin d has been found to in influence all 36 organ tissues in the body and new research shows that optimum intake lev