Each serving of these tapioca-based gummies provides 150% DV (600 IU) of Vitamin D3 for children 4 years and older and 75% DV (300 IU) for children 2 and 3 years of age...and naturally, they are Non-GMO. Like everything at Solgar, U-Cubes™ are manufactured in batches that ensure the highest quality product and are rigorously tested for safety and potency, but never animal tested.  The result? A great tasting multivitamin that U can be sure is great for your children. Solgar