Healthy Origins vitamin d3 1,000 iu is a key nutrient manufactured in a highly absorbable liquid softgel form. Vitamin d3 is synthesized in the body from sunlight and only a small amount can be obtained from food. The winter season and many sunblock products inhibit the bodys ability to produce optimal levels of vitamin d. As a result, vitamin d3 supplementation becomes even more necessary to ensure your body receives an adequate supply. * *these statements have not been evaluated by the food and drug administration. These products are not intended to diagnose, treat, cure or prevent any disease.