Source NaturalsVitamin D3 400 IU 200 tablets

Support the maintenance of healthy calcium and phosphorus levels in the body for strong bones.*Supports muscle strength in older adults, and it also plays an active role in a healthy immune response.*Vitamin D-3 (cholecalciferol) is the optimal form of vitamin D. It is the form of vitamin D that the body manufactures in sunlight, and the form most efficient for the body's needs.Suggested Use: 1 tablet 2 to 3 times daily, following a meal.Manufactured in the USA. Manufactured in Scotts Valley, CA, under the Good Manufacturing Practices (cGMPs) established by the US Food and Drug Administration. (FDA)