For the maintenance of normal bones, teeth and muscle function. In our later years, muscle weakness and balance issues can increase our risk of falling. Falls, in turn, can increase the likelihood of bone fractures in men and women who are aged 60 years and older. This is where supplementing with Vitamin D can help. Our Vitamin D3 400iu (10mcg) helps us maintain normal teeth, bones, and muscle function. Alongside this, Vitamin D is involved in the cell division process, and helps us absorb and use phosphorous and calcium. What's more, it even helps us maintain normal blood calcium levels.