Q: How much vitamin D do I need each day?
In 2016, the Food and Nutrition Board increased the Recommended Dietary Allowance (RDA) of vitamin D for most adults from 10 mcg (400 IU) to 15 mcg (600 IU) per day, and 20 mcg (800 IU) for ages 70+.
Some doctors and nutritionists recommend higher daily vitamin D intakes, especially for those at risk for having low levels. The Vitamin D Council, an organization dedicated to raising awareness about vitamin D, recommends average adults supplement with 125 mcg (5,000 IU) of vitamin D daily. Talk with your doctor about your individual needs.