What Is The RDA Of Vitamin D?
“RDA” stands for “recommended dietary allowance.”
In the United States, for an adult with, or under, 70 years of age, the recommended dietary allowance (RDA) for vitamin D is 600 IU. If you are over 70, the RDA for vitamin D is set at 800 IU. (1)
However, if you look at a bottle of a bestselling vitamin D supplement, you’ll most likely find a much larger number like 5,000 or 10,000 IU.