Super Daily D3 Liquid Vitamin D provides a dose of 2,000 IU per drop of Vitamin D. The natural Vitamin D3 found in Carlson Labs' Super Daily D3 Liquid Vitamin D is essential for good health. Vitamin D3 can be produced in our bodies when our skin is exposed to sunlight under the proper conditions, which is why Vitamin D is also notoriously known as The Sunshine Vitamin. Sadly, in today's world, most people aren't getting enough sunshine or Vitamin D. A single drop of Carlson Labs' Super Daily D3 Liquid Vitamin D provides a full 2,000 IU dose of Vitamin D3 per drop. Carlson Labs' 0.38 oz bottle of Super Daily D3 Liquid Vitamin D contains a total of 365 drops, that's enough to last you a whole year, which is more than can be said for the sun!