Bone and Immune Health2,000 IU (50 mcg) Per CapsuleVitamin SupplementMaintains Bone and Dental HealthIncreases Calcium Absorption and BalanceSupports Immune System FunctionScience-Backed Quality Since 1969 Give your body its daily supply of "the sunshine vitamin" rain or shine with Swanson Vitamin D Complex. One of the most fundamental nutrients in human nutrition is also one in which we are commonly deficient. Vitamin D deficiency is common in all age groups, with children, pregnant and nursing women, obese people and darker-skinned people especially at risk. These nearly epidemic levels of vitamin D deficiency have wide-ranging health implications, as the nutrient is involved in processes throughout the body, from bone mineralization to cardiovascular function. Vitamin D is known as "the sunshine vitamin" because the skin produces it when exposed to the sun's UVB rays, but many of us don't get the sun exposure required to produce all of the vitamin D we need. This is especially problematic during the winter months and for people who live at northern latitudes where direct sun exposure is limited. Even people who spend a lot of time in the sun may find their vitamin D production lacking, as the same sunscreen that protects the skin from the sun's UV rays also inhibits the skin's ability to use that sunlight to synthesize vitamin D, reducing production by as much as 95%. That's why for so many of us, a good vitamin D supplement is absolutely essential—but which form of the vitamin is best? Scientists are still disputing that question, but with our Vitamin D Complex you don't have to choose. Each capsule delivers 1,000 IU of both vitamin D2 and D3 to ensure that your body gets all the vitamin D it needs.