Dietary Supplement. 1,000 IU in Every Drop Supports Immune, Bone & Joint Health*. Promotes Memory & Concentration*. No Artificial Ingredients, Colors or Preservatives. Gluten Free Our bodies do not product Vitamin D3 without adequate sun exposure & it can be challenging to get enough of this essential vitamin from food. That s why we developed Liquid Vitamin D3. Provides 1,000 IU of D3 in each pleasant-tasting drop to allow you to adjust your daily dose as needed. Taken regularly, the liquid form of D3 is easily absorbed for year-round immune support & as a vital aid to calcium absorption for stronger bones. Purity is.