Vitamin D3 1000 IUProvides 1000 IU of vitamin D3 per day Convenient capsule format to take once a day Vitamin D3 improves calcium assimilation and retention, essential functions that support healthy bones and teeth. Low exposure to sunlight, a vegetarian diet, and low consumption of foods fortified with vitamin D often result in inadequate vitamin D levels. Clinical studies regarding the consumption of vitamin D supplements indicate that vitamin D and calcium are